Workspace.java revision 0e4857c302da6adbd45231d7a8bae0289fa33250
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.Animator.AnimatorListener; 25import android.animation.AnimatorListenerAdapter; 26import android.animation.AnimatorSet; 27import android.animation.ObjectAnimator; 28import android.animation.TimeInterpolator; 29import android.animation.ValueAnimator; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Point; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TextView; 66import android.widget.Toast; 67 68import com.android.launcher.R; 69import com.android.launcher2.FolderIcon.FolderRingAnimator; 70import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 View.OnClickListener { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // Y rotation to apply to the workspace screens 84 private static final float WORKSPACE_ROTATION = 12.5f; 85 86 // These are extra scale factors to apply to the mini home screens 87 // so as to achieve the desired transform 88 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 89 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 90 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 91 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 93 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 94 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 95 96 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 97 private static final int BACKGROUND_FADE_IN_DURATION = 350; 98 99 // These animators are used to fade the children's outlines 100 private ObjectAnimator mChildrenOutlineFadeInAnimation; 101 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 102 private float mChildrenOutlineAlpha = 0; 103 104 // These properties refer to the background protection gradient used for AllApps and Customize 105 private ValueAnimator mBackgroundFadeInAnimation; 106 private ValueAnimator mBackgroundFadeOutAnimation; 107 private Drawable mBackground; 108 boolean mDrawBackground = true; 109 private float mBackgroundAlpha = 0; 110 private float mOverScrollMaxBackgroundAlpha = 0.0f; 111 private int mOverScrollPageIndex = -1; 112 113 114 115 private final WallpaperManager mWallpaperManager; 116 private IBinder mWindowToken; 117 118 private int mDefaultPage; 119 120 private boolean mIsDragInProcess = false; 121 private boolean mIsDraggingOverIcon = false; 122 123 /** 124 * CellInfo for the cell that is currently being dragged 125 */ 126 private CellLayout.CellInfo mDragInfo; 127 128 /** 129 * Target drop area calculated during last acceptDrop call. 130 */ 131 private int[] mTargetCell = new int[2]; 132 133 /** 134 * The CellLayout that is currently being dragged over 135 */ 136 private CellLayout mDragTargetLayout = null; 137 138 private Launcher mLauncher; 139 private IconCache mIconCache; 140 private DragController mDragController; 141 142 // These are temporary variables to prevent having to allocate a new object just to 143 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 144 private int[] mTempCell = new int[2]; 145 private int[] mTempEstimate = new int[2]; 146 private float[] mDragViewVisualCenter = new float[2]; 147 private float[] mTempDragCoordinates = new float[2]; 148 private float[] mTempTouchCoordinates = new float[2]; 149 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 150 private float[] mTempDragBottomRightCoordinates = new float[2]; 151 private float[] mTempFloatTuple = new float[2]; 152 private Matrix mTempInverseMatrix = new Matrix(); 153 private int[] mTempLocation = new int[2]; 154 155 private SpringLoadedDragController mSpringLoadedDragController; 156 private float mSpringLoadedShrinkFactor; 157 158 private static final int DEFAULT_CELL_COUNT_X = 4; 159 private static final int DEFAULT_CELL_COUNT_Y = 4; 160 161 // State variable that indicates whether the pages are small (ie when you're 162 // in all apps or customize mode) 163 private boolean mIsSmall = false; 164 private boolean mIsInUnshrinkAnimation = false; 165 private AnimatorListener mShrinkAnimationListener; 166 private AnimatorListener mUnshrinkAnimationListener; 167 enum ShrinkState { SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 168 private ShrinkState mShrinkState; 169 private boolean mWaitingToShrink = false; 170 private ShrinkState mWaitingToShrinkState; 171 private AnimatorSet mAnimator; 172 173 /** Is the user is dragging an item near the edge of a page? */ 174 private boolean mInScrollArea = false; 175 176 /** If mInScrollArea is true, the direction of the scroll. */ 177 private int mPendingScrollDirection = DragController.SCROLL_NONE; 178 179 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 180 private Bitmap mDragOutline = null; 181 private final Rect mTempRect = new Rect(); 182 private final int[] mTempXY = new int[2]; 183 184 private ValueAnimator mDropAnim = null; 185 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 186 private View mDropView = null; 187 private int[] mDropViewPos = new int[] { -1, -1 }; 188 189 // Paint used to draw external drop outline 190 private final Paint mExternalDragOutlinePaint = new Paint(); 191 192 // Camera and Matrix used to determine the final position of a neighboring CellLayout 193 private final Matrix mMatrix = new Matrix(); 194 private final Camera mCamera = new Camera(); 195 private final float mTempFloat2[] = new float[2]; 196 197 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 198 int mWallpaperWidth; 199 int mWallpaperHeight; 200 WallpaperOffsetInterpolator mWallpaperOffset; 201 boolean mUpdateWallpaperOffsetImmediately = false; 202 boolean mSyncWallpaperOffsetWithScroll = true; 203 private Runnable mDelayedResizeRunnable; 204 205 // info about the last drag 206 private DragView mLastDragView; 207 private int mLastDragOriginX; 208 private int mLastDragOriginY; 209 private int mLastDragXOffset; 210 private int mLastDragYOffset; 211 212 private ArrayList<FolderRingAnimator> mFolderOuterRings = new ArrayList<FolderRingAnimator>(); 213 214 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 215 private static final int FOLDER_CREATION_TIMEOUT = 250; 216 private final Alarm mFolderCreationAlarm = new Alarm(); 217 private FolderRingAnimator mDragFolderRingAnimator = null; 218 private View mLastDragOverView = null; 219 private boolean mCreateUserFolderOnDrop = false; 220 private int mCellWidth = -1; 221 private int mCellHeight = -1; 222 223 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 224 private float mXDown; 225 private float mYDown; 226 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 227 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 228 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 229 230 /** 231 * Used to inflate the Workspace from XML. 232 * 233 * @param context The application's context. 234 * @param attrs The attributes set containing the Workspace's customization values. 235 */ 236 public Workspace(Context context, AttributeSet attrs) { 237 this(context, attrs, 0); 238 } 239 240 /** 241 * Used to inflate the Workspace from XML. 242 * 243 * @param context The application's context. 244 * @param attrs The attributes set containing the Workspace's customization values. 245 * @param defStyle Unused. 246 */ 247 public Workspace(Context context, AttributeSet attrs, int defStyle) { 248 super(context, attrs, defStyle); 249 mContentIsRefreshable = false; 250 251 // With workspace, data is available straight from the get-go 252 setDataIsReady(); 253 254 if (!LauncherApplication.isScreenLarge()) { 255 mFadeInAdjacentScreens = false; 256 } 257 258 mWallpaperManager = WallpaperManager.getInstance(context); 259 260 int cellCountX = DEFAULT_CELL_COUNT_X; 261 int cellCountY = DEFAULT_CELL_COUNT_Y; 262 263 TypedArray a = context.obtainStyledAttributes(attrs, 264 R.styleable.Workspace, defStyle, 0); 265 266 final Resources res = context.getResources(); 267 if (LauncherApplication.isScreenLarge()) { 268 // Determine number of rows/columns dynamically 269 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 270 // Around that ratio we should make cells the same size in portrait and 271 // landscape 272 final DisplayMetrics dm = res.getDisplayMetrics(); 273 float widthDp = dm.widthPixels / dm.density; 274 float heightDp = dm.heightPixels / dm.density; 275 276 TypedArray actionBarSizeTypedArray = 277 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 278 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 279 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 280 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 281 282 cellCountX = 1; 283 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 284 cellCountX++; 285 } 286 287 cellCountY = 1; 288 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 289 <= smallestScreenDim - systemBarHeight) { 290 cellCountY++; 291 } 292 } 293 294 mSpringLoadedShrinkFactor = 295 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 296 297 // if the value is manually specified, use that instead 298 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 299 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 300 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 301 a.recycle(); 302 303 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 304 setHapticFeedbackEnabled(false); 305 306 initWorkspace(); 307 308 // Disable multitouch across the workspace/all apps/customize tray 309 setMotionEventSplittingEnabled(true); 310 } 311 312 /** 313 * Initializes various states for this workspace. 314 */ 315 protected void initWorkspace() { 316 Context context = getContext(); 317 mCurrentPage = mDefaultPage; 318 Launcher.setScreen(mCurrentPage); 319 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 320 mIconCache = app.getIconCache(); 321 mExternalDragOutlinePaint.setAntiAlias(true); 322 setWillNotDraw(false); 323 324 try { 325 final Resources res = getResources(); 326 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 327 } catch (Resources.NotFoundException e) { 328 // In this case, we will skip drawing background protection 329 } 330 331 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 332 @Override 333 public void onAnimationStart(Animator animation) { 334 mIsInUnshrinkAnimation = true; 335 } 336 337 @Override 338 public void onAnimationEnd(Animator animation) { 339 mIsInUnshrinkAnimation = false; 340 mSyncWallpaperOffsetWithScroll = true; 341 if (mShrinkState == ShrinkState.SPRING_LOADED) { 342 View layout = null; 343 if (mLastDragView != null) { 344 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 345 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 346 } 347 } 348 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 349 mAnimator = null; 350 enableChildrenLayers(false); 351 } 352 }; 353 mShrinkAnimationListener = new AnimatorListenerAdapter() { 354 @Override 355 public void onAnimationStart(Animator animation) { 356 enableChildrenLayers(true); 357 } 358 @Override 359 public void onAnimationEnd(Animator animation) { 360 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 361 mAnimator = null; 362 } 363 }; 364 mSnapVelocity = 600; 365 mWallpaperOffset = new WallpaperOffsetInterpolator(); 366 } 367 368 @Override 369 protected int getScrollMode() { 370 return SmoothPagedView.X_LARGE_MODE; 371 } 372 373 private void onAddView(View child) { 374 if (!(child instanceof CellLayout)) { 375 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 376 } 377 CellLayout cl = ((CellLayout) child); 378 cl.setOnInterceptTouchListener(this); 379 cl.setOnClickListener(this); 380 cl.setClickable(true); 381 cl.enableHardwareLayers(); 382 } 383 384 @Override 385 public void addView(View child, int index, LayoutParams params) { 386 onAddView(child); 387 super.addView(child, index, params); 388 } 389 390 @Override 391 public void addView(View child) { 392 onAddView(child); 393 super.addView(child); 394 } 395 396 @Override 397 public void addView(View child, int index) { 398 onAddView(child); 399 super.addView(child, index); 400 } 401 402 @Override 403 public void addView(View child, int width, int height) { 404 onAddView(child); 405 super.addView(child, width, height); 406 } 407 408 @Override 409 public void addView(View child, LayoutParams params) { 410 onAddView(child); 411 super.addView(child, params); 412 } 413 414 /** 415 * @return The open folder on the current screen, or null if there is none 416 */ 417 Folder getOpenFolder() { 418 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 419 int count = dragLayer.getChildCount(); 420 for (int i = 0; i < count; i++) { 421 View child = dragLayer.getChildAt(i); 422 if (child instanceof Folder) { 423 Folder folder = (Folder) child; 424 if (folder.getInfo().opened) 425 return folder; 426 } 427 } 428 return null; 429 } 430 431 boolean isTouchActive() { 432 return mTouchState != TOUCH_STATE_REST; 433 } 434 435 /** 436 * Adds the specified child in the specified screen. The position and dimension of 437 * the child are defined by x, y, spanX and spanY. 438 * 439 * @param child The child to add in one of the workspace's screens. 440 * @param screen The screen in which to add the child. 441 * @param x The X position of the child in the screen's grid. 442 * @param y The Y position of the child in the screen's grid. 443 * @param spanX The number of cells spanned horizontally by the child. 444 * @param spanY The number of cells spanned vertically by the child. 445 */ 446 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 447 addInScreen(child, screen, x, y, spanX, spanY, false); 448 } 449 450 void addInFullScreen(View child, int screen) { 451 addInScreen(child, screen, 0, 0, -1, -1); 452 } 453 454 /** 455 * Adds the specified child in the specified screen. The position and dimension of 456 * the child are defined by x, y, spanX and spanY. 457 * 458 * @param child The child to add in one of the workspace's screens. 459 * @param screen The screen in which to add the child. 460 * @param x The X position of the child in the screen's grid. 461 * @param y The Y position of the child in the screen's grid. 462 * @param spanX The number of cells spanned horizontally by the child. 463 * @param spanY The number of cells spanned vertically by the child. 464 * @param insert When true, the child is inserted at the beginning of the children list. 465 */ 466 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 467 if (screen < 0 || screen >= getChildCount()) { 468 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 469 + " (was " + screen + "); skipping child"); 470 return; 471 } 472 473 final CellLayout group = (CellLayout) getChildAt(screen); 474 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 475 if (lp == null) { 476 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 477 } else { 478 lp.cellX = x; 479 lp.cellY = y; 480 lp.cellHSpan = spanX; 481 lp.cellVSpan = spanY; 482 } 483 484 if (spanX < 0 && spanY < 0) { 485 lp.isLockedToGrid = false; 486 } 487 488 // Get the canonical child id to uniquely represent this view in this screen 489 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 490 boolean markCellsAsOccupied = !(child instanceof Folder); 491 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 492 // TODO: This branch occurs when the workspace is adding views 493 // outside of the defined grid 494 // maybe we should be deleting these items from the LauncherModel? 495 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 496 } 497 498 if (!(child instanceof Folder)) { 499 child.setHapticFeedbackEnabled(false); 500 child.setOnLongClickListener(mLongClickListener); 501 } 502 if (child instanceof DropTarget) { 503 mDragController.addDropTarget((DropTarget) child); 504 } 505 } 506 507 /** 508 * Check if the point (x, y) hits a given page. 509 */ 510 private boolean hitsPage(int index, float x, float y) { 511 final View page = getChildAt(index); 512 if (page != null) { 513 float[] localXY = { x, y }; 514 mapPointFromSelfToChild(page, localXY); 515 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 516 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 517 } 518 return false; 519 } 520 521 @Override 522 protected boolean hitsPreviousPage(float x, float y) { 523 // mNextPage is set to INVALID_PAGE whenever we are stationary. 524 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 525 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 526 return hitsPage(current - 1, x, y); 527 } 528 529 @Override 530 protected boolean hitsNextPage(float x, float y) { 531 // mNextPage is set to INVALID_PAGE whenever we are stationary. 532 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 533 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 534 return hitsPage(current + 1, x, y); 535 } 536 537 /** 538 * Called directly from a CellLayout (not by the framework), after we've been added as a 539 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 540 * that it should intercept touch events, which is not something that is normally supported. 541 */ 542 @Override 543 public boolean onTouch(View v, MotionEvent event) { 544 return (mIsSmall || mIsInUnshrinkAnimation); 545 } 546 547 /** 548 * Handle a click event on a CellLayout. 549 */ 550 @Override 551 public void onClick(View cellLayout) { 552 // Only allow clicks on a CellLayout if it is shrunken and visible. 553 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 554 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 555 } 556 } 557 558 protected void onWindowVisibilityChanged (int visibility) { 559 mLauncher.onWindowVisibilityChanged(visibility); 560 } 561 562 @Override 563 public boolean dispatchUnhandledMove(View focused, int direction) { 564 if (mIsSmall || mIsInUnshrinkAnimation) { 565 // when the home screens are shrunken, shouldn't allow side-scrolling 566 return false; 567 } 568 return super.dispatchUnhandledMove(focused, direction); 569 } 570 571 @Override 572 public boolean onInterceptTouchEvent(MotionEvent ev) { 573 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 574 mXDown = ev.getX(); 575 mYDown = ev.getY(); 576 } 577 578 return super.onInterceptTouchEvent(ev); 579 } 580 581 @Override 582 protected void determineScrollingStart(MotionEvent ev) { 583 if (!mIsSmall && !mIsInUnshrinkAnimation) { 584 float deltaX = Math.abs(ev.getX() - mXDown); 585 float deltaY = Math.abs(ev.getY() - mYDown); 586 587 if (Float.compare(deltaX, 0f) == 0) return; 588 589 float slope = deltaY / deltaX; 590 float theta = (float) Math.atan(slope); 591 592 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 593 cancelCurrentPageLongPress(); 594 } 595 596 if (theta > MAX_SWIPE_ANGLE) { 597 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 598 return; 599 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 600 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 601 // increase the touch slop to make it harder to begin scrolling the workspace. This 602 // results in vertically scrolling widgets to more easily. The higher the angle, the 603 // more we increase touch slop. 604 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 605 float extraRatio = (float) 606 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 607 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 608 } else { 609 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 610 super.determineScrollingStart(ev); 611 } 612 } 613 } 614 615 @Override 616 protected boolean isScrollingIndicatorEnabled() { 617 return mShrinkState != ShrinkState.SPRING_LOADED; 618 } 619 620 protected void onPageBeginMoving() { 621 super.onPageBeginMoving(); 622 623 if (mNextPage != INVALID_PAGE) { 624 // we're snapping to a particular screen 625 enableChildrenCache(mCurrentPage, mNextPage); 626 } else { 627 // this is when user is actively dragging a particular screen, they might 628 // swipe it either left or right (but we won't advance by more than one screen) 629 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 630 } 631 632 // Only show page outlines as we pan if we are on large screen 633 if (LauncherApplication.isScreenLarge()) { 634 showOutlines(); 635 } 636 } 637 638 protected void onPageEndMoving() { 639 super.onPageEndMoving(); 640 641 clearChildrenCache(); 642 // Hide the outlines, as long as we're not dragging 643 if (!mDragController.dragging()) { 644 // Only hide page outlines as we pan if we are on large screen 645 if (LauncherApplication.isScreenLarge()) { 646 hideOutlines(); 647 } 648 } 649 mOverScrollMaxBackgroundAlpha = 0.0f; 650 mOverScrollPageIndex = -1; 651 652 if (mDelayedResizeRunnable != null) { 653 mDelayedResizeRunnable.run(); 654 mDelayedResizeRunnable = null; 655 } 656 } 657 658 @Override 659 protected void notifyPageSwitchListener() { 660 super.notifyPageSwitchListener(); 661 Launcher.setScreen(mCurrentPage); 662 }; 663 664 // As a ratio of screen height, the total distance we want the parallax effect to span 665 // vertically 666 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 667 return 1.1f; 668 } 669 670 // As a ratio of screen height, the total distance we want the parallax effect to span 671 // horizontally 672 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 673 float aspectRatio = width / (float) height; 674 675 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 676 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 677 // We will use these two data points to extrapolate how much the wallpaper parallax effect 678 // to span (ie travel) at any aspect ratio: 679 680 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 681 final float ASPECT_RATIO_PORTRAIT = 10/16f; 682 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 683 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 684 685 // To find out the desired width at different aspect ratios, we use the following two 686 // formulas, where the coefficient on x is the aspect ratio (width/height): 687 // (16/10)x + y = 1.5 688 // (10/16)x + y = 1.2 689 // We solve for x and y and end up with a final formula: 690 final float x = 691 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 692 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 693 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 694 return x * aspectRatio + y; 695 } 696 697 // The range of scroll values for Workspace 698 private int getScrollRange() { 699 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 700 } 701 702 protected void setWallpaperDimension() { 703 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 704 DisplayMetrics displayMetrics = new DisplayMetrics(); 705 display.getRealMetrics(displayMetrics); 706 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 707 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 708 709 // We need to ensure that there is enough extra space in the wallpaper for the intended 710 // parallax effects 711 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 712 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 713 new Thread("setWallpaperDimension") { 714 public void run() { 715 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 716 } 717 }.start(); 718 } 719 720 public void setVerticalWallpaperOffset(float offset) { 721 mWallpaperOffset.setFinalY(offset); 722 } 723 public float getVerticalWallpaperOffset() { 724 return mWallpaperOffset.getCurrY(); 725 } 726 public void setHorizontalWallpaperOffset(float offset) { 727 mWallpaperOffset.setFinalX(offset); 728 } 729 public float getHorizontalWallpaperOffset() { 730 return mWallpaperOffset.getCurrX(); 731 } 732 733 private float wallpaperOffsetForCurrentScroll() { 734 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 735 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 736 // The wallpaper travel width is how far, from left to right, the wallpaper will move 737 // at this orientation (for example, in portrait mode we don't move all the way to the 738 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 739 int wallpaperTravelWidth = (int) (display.getWidth() * 740 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 741 if (!isStaticWallpaper) { 742 wallpaperTravelWidth = mWallpaperWidth; 743 } 744 745 // Set wallpaper offset steps (1 / (number of screens - 1)) 746 // We have 3 vertical offset states (centered, and then top/bottom aligned 747 // for all apps/customize) 748 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 749 750 int scrollRange = getScrollRange(); 751 float scrollProgressOffset = 0; 752 753 // Account for overscroll: you only see the absolute edge of the wallpaper if 754 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 755 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 756 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 757 if (isStaticWallpaper) { 758 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 759 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 760 scrollRange += 2 * overscrollOffset; 761 } 762 763 float scrollProgress = 764 mScrollX / (float) scrollRange + scrollProgressOffset; 765 float offsetInDips = wallpaperTravelWidth * scrollProgress + 766 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 767 float offset = offsetInDips / (float) mWallpaperWidth; 768 return offset; 769 } 770 private void syncWallpaperOffsetWithScroll() { 771 final boolean enableWallpaperEffects = isHardwareAccelerated(); 772 if (enableWallpaperEffects) { 773 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 774 } 775 } 776 777 public void updateWallpaperOffsetImmediately() { 778 mUpdateWallpaperOffsetImmediately = true; 779 } 780 781 private void updateWallpaperOffsets() { 782 boolean updateNow = false; 783 boolean keepUpdating = true; 784 if (mUpdateWallpaperOffsetImmediately) { 785 updateNow = true; 786 keepUpdating = false; 787 mWallpaperOffset.jumpToFinal(); 788 mUpdateWallpaperOffsetImmediately = false; 789 } else { 790 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 791 } 792 if (updateNow) { 793 if (mWindowToken != null) { 794 mWallpaperManager.setWallpaperOffsets(mWindowToken, 795 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 796 } 797 } 798 if (keepUpdating) { 799 fastInvalidate(); 800 } 801 } 802 803 class WallpaperOffsetInterpolator { 804 float mFinalHorizontalWallpaperOffset = 0.0f; 805 float mFinalVerticalWallpaperOffset = 0.5f; 806 float mHorizontalWallpaperOffset = 0.0f; 807 float mVerticalWallpaperOffset = 0.5f; 808 long mLastWallpaperOffsetUpdateTime; 809 boolean mIsMovingFast; 810 boolean mOverrideHorizontalCatchupConstant; 811 float mHorizontalCatchupConstant = 0.35f; 812 float mVerticalCatchupConstant = 0.35f; 813 814 public WallpaperOffsetInterpolator() { 815 } 816 817 public void setOverrideHorizontalCatchupConstant(boolean override) { 818 mOverrideHorizontalCatchupConstant = override; 819 } 820 821 public void setHorizontalCatchupConstant(float f) { 822 mHorizontalCatchupConstant = f; 823 } 824 825 public void setVerticalCatchupConstant(float f) { 826 mVerticalCatchupConstant = f; 827 } 828 829 public boolean computeScrollOffset() { 830 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 831 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 832 mIsMovingFast = false; 833 return false; 834 } 835 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 836 boolean isLandscape = display.getWidth() > display.getHeight(); 837 838 long currentTime = System.currentTimeMillis(); 839 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 840 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 841 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 842 843 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 844 if (!mIsMovingFast && xdiff > 0.07) { 845 mIsMovingFast = true; 846 } 847 848 float fractionToCatchUpIn1MsHorizontal; 849 if (mOverrideHorizontalCatchupConstant) { 850 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 851 } else if (mIsMovingFast) { 852 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 853 } else { 854 // slow 855 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 856 } 857 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 858 859 fractionToCatchUpIn1MsHorizontal /= 33f; 860 fractionToCatchUpIn1MsVertical /= 33f; 861 862 final float UPDATE_THRESHOLD = 0.00001f; 863 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 864 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 865 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 866 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 867 if (jumpToFinalValue) { 868 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 869 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 870 } else { 871 float percentToCatchUpVertical = 872 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 873 float percentToCatchUpHorizontal = 874 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 875 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 876 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 877 } 878 879 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 880 return true; 881 } 882 883 public float getCurrX() { 884 return mHorizontalWallpaperOffset; 885 } 886 887 public float getFinalX() { 888 return mFinalHorizontalWallpaperOffset; 889 } 890 891 public float getCurrY() { 892 return mVerticalWallpaperOffset; 893 } 894 895 public float getFinalY() { 896 return mFinalVerticalWallpaperOffset; 897 } 898 899 public void setFinalX(float x) { 900 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 901 } 902 903 public void setFinalY(float y) { 904 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 905 } 906 907 public void jumpToFinal() { 908 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 909 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 910 } 911 } 912 913 @Override 914 public void computeScroll() { 915 super.computeScroll(); 916 if (mSyncWallpaperOffsetWithScroll) { 917 syncWallpaperOffsetWithScroll(); 918 } 919 } 920 921 void showOutlines() { 922 if (!mIsSmall && !mIsInUnshrinkAnimation) { 923 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 924 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 925 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 926 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 927 mChildrenOutlineFadeInAnimation.start(); 928 } 929 } 930 931 void hideOutlines() { 932 if (!mIsSmall && !mIsInUnshrinkAnimation) { 933 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 934 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 935 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 936 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 937 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 938 mChildrenOutlineFadeOutAnimation.start(); 939 } 940 } 941 942 public void showOutlinesTemporarily() { 943 if (!mIsPageMoving && !isTouchActive()) { 944 snapToPage(mCurrentPage); 945 } 946 } 947 948 public void setChildrenOutlineAlpha(float alpha) { 949 mChildrenOutlineAlpha = alpha; 950 for (int i = 0; i < getChildCount(); i++) { 951 CellLayout cl = (CellLayout) getChildAt(i); 952 cl.setBackgroundAlpha(alpha); 953 } 954 } 955 956 public float getChildrenOutlineAlpha() { 957 return mChildrenOutlineAlpha; 958 } 959 960 void disableBackground() { 961 mDrawBackground = false; 962 } 963 void enableBackground() { 964 mDrawBackground = true; 965 } 966 967 private void showBackgroundGradientForAllApps() { 968 showBackgroundGradient(); 969 } 970 971 private void showBackgroundGradient() { 972 if (mBackground == null) return; 973 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 974 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 975 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 976 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 977 public void onAnimationUpdate(ValueAnimator animation) { 978 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 979 } 980 }); 981 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 982 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 983 mBackgroundFadeInAnimation.start(); 984 } 985 986 private void hideBackgroundGradient() { 987 if (mBackground == null) return; 988 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 989 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 990 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 991 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 992 public void onAnimationUpdate(ValueAnimator animation) { 993 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 994 } 995 }); 996 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 997 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 998 mBackgroundFadeOutAnimation.start(); 999 } 1000 1001 public void setBackgroundAlpha(float alpha) { 1002 if (alpha != mBackgroundAlpha) { 1003 mBackgroundAlpha = alpha; 1004 invalidate(); 1005 } 1006 } 1007 1008 public float getBackgroundAlpha() { 1009 return mBackgroundAlpha; 1010 } 1011 1012 /** 1013 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1014 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1015 * as being larger. This method computes what offset the rotated view should be translated 1016 * in order to minimize this perceived gap. 1017 * @param degrees Angle of the view 1018 * @param width Width of the view 1019 * @param height Height of the view 1020 * @return Offset to be used in a View.setTranslationX() call 1021 */ 1022 private float getOffsetXForRotation(float degrees, int width, int height) { 1023 mMatrix.reset(); 1024 mCamera.save(); 1025 mCamera.rotateY(Math.abs(degrees)); 1026 mCamera.getMatrix(mMatrix); 1027 mCamera.restore(); 1028 1029 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1030 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1031 mTempFloat2[0] = width; 1032 mTempFloat2[1] = height; 1033 mMatrix.mapPoints(mTempFloat2); 1034 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1035 } 1036 1037 float backgroundAlphaInterpolator(float r) { 1038 float pivotA = 0.1f; 1039 float pivotB = 0.4f; 1040 if (r < pivotA) { 1041 return 0; 1042 } else if (r > pivotB) { 1043 return 1.0f; 1044 } else { 1045 return (r - pivotA)/(pivotB - pivotA); 1046 } 1047 } 1048 1049 float overScrollBackgroundAlphaInterpolator(float r) { 1050 float threshold = 0.08f; 1051 1052 if (r > mOverScrollMaxBackgroundAlpha) { 1053 mOverScrollMaxBackgroundAlpha = r; 1054 } else if (r < mOverScrollMaxBackgroundAlpha) { 1055 r = mOverScrollMaxBackgroundAlpha; 1056 } 1057 1058 return Math.min(r / threshold, 1.0f); 1059 } 1060 1061 @Override 1062 protected void screenScrolled(int screenCenter) { 1063 super.screenScrolled(screenCenter); 1064 1065 // If the screen is not xlarge, then don't rotate the CellLayouts 1066 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1067 // see unshrink(). 1068 if (!LauncherApplication.isScreenLarge()) return; 1069 1070 final int halfScreenSize = getMeasuredWidth() / 2; 1071 1072 for (int i = 0; i < getChildCount(); i++) { 1073 CellLayout cl = (CellLayout) getChildAt(i); 1074 if (cl != null) { 1075 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1076 int delta = screenCenter - (getChildOffset(i) - 1077 getRelativeChildOffset(i) + halfScreenSize); 1078 1079 float scrollProgress = delta / (totalDistance * 1.0f); 1080 scrollProgress = Math.min(scrollProgress, 1.0f); 1081 scrollProgress = Math.max(scrollProgress, -1.0f); 1082 1083 // If the current page (i) is being overscrolled, we use a different 1084 // set of rules for setting the background alpha multiplier. 1085 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1086 i == getChildCount() -1 )) { 1087 cl.setBackgroundAlphaMultiplier( 1088 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1089 mOverScrollPageIndex = i; 1090 } else if (mOverScrollPageIndex != i) { 1091 cl.setBackgroundAlphaMultiplier( 1092 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1093 } 1094 1095 float rotation = WORKSPACE_ROTATION * scrollProgress; 1096 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1097 cl.setTranslationX(translationX); 1098 1099 cl.setRotationY(rotation); 1100 } 1101 } 1102 } 1103 1104 protected void onAttachedToWindow() { 1105 super.onAttachedToWindow(); 1106 mWindowToken = getWindowToken(); 1107 computeScroll(); 1108 mDragController.setWindowToken(mWindowToken); 1109 } 1110 1111 protected void onDetachedFromWindow() { 1112 mWindowToken = null; 1113 } 1114 1115 @Override 1116 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1117 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1118 mUpdateWallpaperOffsetImmediately = true; 1119 } 1120 super.onLayout(changed, left, top, right, bottom); 1121 1122 // if shrinkToBottom() is called on initialization, it has to be deferred 1123 // until after the first call to onLayout so that it has the correct width 1124 if (mWaitingToShrink) { 1125 // shrink can trigger a synchronous onLayout call, so we 1126 // post this to avoid a stack overflow / tangled onLayout calls 1127 post(new Runnable() { 1128 public void run() { 1129 shrink(mWaitingToShrinkState, false); 1130 mWaitingToShrink = false; 1131 } 1132 }); 1133 } 1134 } 1135 1136 public void showFolderAccept(FolderRingAnimator fra) { 1137 mFolderOuterRings.add(fra); 1138 } 1139 1140 public void hideFolderAccept(FolderRingAnimator fra) { 1141 if (mFolderOuterRings.contains(fra)) { 1142 mFolderOuterRings.remove(fra); 1143 } 1144 invalidate(); 1145 } 1146 1147 @Override 1148 protected void onDraw(Canvas canvas) { 1149 updateWallpaperOffsets(); 1150 1151 // Draw the background gradient if necessary 1152 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1153 int alpha = (int) (mBackgroundAlpha * 255); 1154 mBackground.setAlpha(alpha); 1155 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1156 getMeasuredHeight()); 1157 mBackground.draw(canvas); 1158 } 1159 1160 // The folder outer / inner ring image(s) 1161 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1162 View currentPage = getChildAt(getCurrentPage()); 1163 Matrix m = currentPage.getMatrix(); 1164 1165 FolderRingAnimator fra = mFolderOuterRings.get(i); 1166 1167 // Draw outer ring 1168 Drawable d = FolderRingAnimator.sSharedOuterRingDrawable; 1169 int width = (int) fra.getOuterRingSize(); 1170 int height = width; 1171 fra.getLocation(mTempLocation); 1172 1173 // First we map the folder's location from window coordinates to its containing 1174 // CellLayout's coordinates. Then we transform the coordinates according to the 1175 // CellLayout's transform. Finally, we map this back into the coordinates of the 1176 // the window (ie. Workspace). 1177 int x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1178 int y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1179 mTempFloatTuple[0] = x; 1180 mTempFloatTuple[1] = y; 1181 m.mapPoints(mTempFloatTuple); 1182 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1183 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1184 1185 canvas.save(); 1186 canvas.translate(x, y); 1187 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1188 (int) (height * currentPage.getScaleY())); 1189 d.draw(canvas); 1190 canvas.restore(); 1191 1192 // Draw inner ring 1193 d = FolderRingAnimator.sSharedInnerRingDrawable; 1194 width = (int) fra.getInnerRingSize(); 1195 height = width; 1196 1197 // First we map the folder's location from window coordinates to its containing 1198 // CellLayout's coordinates. Then we transform the coordinates according to the 1199 // CellLayout's transform. Finally, we map this back into the coordinates of the 1200 // the window (ie. Workspace). 1201 x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1202 y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1203 mTempFloatTuple[0] = x; 1204 mTempFloatTuple[1] = y; 1205 m.mapPoints(mTempFloatTuple); 1206 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1207 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1208 1209 canvas.save(); 1210 canvas.translate(x, y); 1211 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1212 (int) (height * currentPage.getScaleY())); 1213 d.draw(canvas); 1214 canvas.restore(); 1215 } 1216 super.onDraw(canvas); 1217 } 1218 1219 @Override 1220 protected void dispatchDraw(Canvas canvas) { 1221 if (mIsSmall || mIsInUnshrinkAnimation) { 1222 // Draw all the workspaces if we're small 1223 final int pageCount = getChildCount(); 1224 final long drawingTime = getDrawingTime(); 1225 for (int i = 0; i < pageCount; i++) { 1226 final CellLayout page = (CellLayout) getChildAt(i); 1227 if (page.getVisibility() == VISIBLE 1228 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1229 drawChild(canvas, page, drawingTime); 1230 } 1231 } 1232 } else { 1233 super.dispatchDraw(canvas); 1234 1235 final int width = getWidth(); 1236 final int height = getHeight(); 1237 1238 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1239 if (mInScrollArea && (height > width)) { 1240 final int pageHeight = getChildAt(0).getHeight(); 1241 1242 // This determines the height of the glowing edge: 90% of the page height 1243 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1244 1245 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1246 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1247 1248 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1249 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1250 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1251 d.draw(canvas); 1252 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1253 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1254 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1255 d.draw(canvas); 1256 } 1257 } 1258 1259 if (mDropView != null) { 1260 // We are animating an item that was just dropped on the home screen. 1261 // Render its View in the current animation position. 1262 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1263 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1264 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1265 canvas.translate(xPos, yPos); 1266 mDropView.draw(canvas); 1267 canvas.restore(); 1268 } 1269 } 1270 } 1271 1272 @Override 1273 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1274 if (!mLauncher.isAllAppsVisible()) { 1275 final Folder openFolder = getOpenFolder(); 1276 if (openFolder != null) { 1277 return openFolder.requestFocus(direction, previouslyFocusedRect); 1278 } else { 1279 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1280 } 1281 } 1282 return false; 1283 } 1284 1285 @Override 1286 public int getDescendantFocusability() { 1287 if (mIsSmall) { 1288 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1289 } 1290 return super.getDescendantFocusability(); 1291 } 1292 1293 @Override 1294 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1295 if (!mLauncher.isAllAppsVisible()) { 1296 final Folder openFolder = getOpenFolder(); 1297 if (openFolder != null) { 1298 openFolder.addFocusables(views, direction); 1299 } else { 1300 super.addFocusables(views, direction, focusableMode); 1301 } 1302 } 1303 } 1304 1305 void enableChildrenCache(int fromPage, int toPage) { 1306 if (fromPage > toPage) { 1307 final int temp = fromPage; 1308 fromPage = toPage; 1309 toPage = temp; 1310 } 1311 1312 final int screenCount = getChildCount(); 1313 1314 fromPage = Math.max(fromPage, 0); 1315 toPage = Math.min(toPage, screenCount - 1); 1316 1317 for (int i = fromPage; i <= toPage; i++) { 1318 final CellLayout layout = (CellLayout) getChildAt(i); 1319 layout.setChildrenDrawnWithCacheEnabled(true); 1320 layout.setChildrenDrawingCacheEnabled(true); 1321 } 1322 } 1323 1324 void clearChildrenCache() { 1325 final int screenCount = getChildCount(); 1326 for (int i = 0; i < screenCount; i++) { 1327 final CellLayout layout = (CellLayout) getChildAt(i); 1328 layout.setChildrenDrawnWithCacheEnabled(false); 1329 } 1330 } 1331 1332 protected void enableChildrenLayers(boolean enable) { 1333 for (int i = 0; i < getPageCount(); i++) { 1334 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1335 } 1336 } 1337 @Override 1338 protected void pageBeginMoving() { 1339 enableChildrenLayers(true); 1340 super.pageBeginMoving(); 1341 } 1342 1343 @Override 1344 protected void pageEndMoving() { 1345 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1346 enableChildrenLayers(false); 1347 } 1348 super.pageEndMoving(); 1349 } 1350 1351 @Override 1352 protected void onWallpaperTap(MotionEvent ev) { 1353 final int[] position = mTempCell; 1354 getLocationOnScreen(position); 1355 1356 int pointerIndex = ev.getActionIndex(); 1357 position[0] += (int) ev.getX(pointerIndex); 1358 position[1] += (int) ev.getY(pointerIndex); 1359 1360 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1361 ev.getAction() == MotionEvent.ACTION_UP 1362 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1363 position[0], position[1], 0, null); 1364 } 1365 1366 public boolean isSmall() { 1367 return mIsSmall; 1368 } 1369 1370 private float getYScaleForScreen(int screen) { 1371 int x = Math.abs(screen - 2); 1372 1373 // TODO: This should be generalized for use with arbitrary rotation angles. 1374 switch(x) { 1375 case 0: return EXTRA_SCALE_FACTOR_0; 1376 case 1: return EXTRA_SCALE_FACTOR_1; 1377 case 2: return EXTRA_SCALE_FACTOR_2; 1378 } 1379 return 1.0f; 1380 } 1381 1382 public void shrink(ShrinkState shrinkState) { 1383 shrink(shrinkState, true); 1384 } 1385 1386 1387 // we use this to shrink the workspace for the all apps view and the customize view 1388 public void shrink(ShrinkState shrinkState, boolean animated) { 1389 if (mFirstLayout) { 1390 // (mFirstLayout == "first layout has not happened yet") 1391 // if we get a call to shrink() as part of our initialization (for example, if 1392 // Launcher is started in All Apps mode) then we need to wait for a layout call 1393 // to get our width so we can layout the mini-screen views correctly 1394 mWaitingToShrink = true; 1395 mWaitingToShrinkState = shrinkState; 1396 return; 1397 } 1398 // Stop any scrolling, move to the current page right away 1399 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1400 1401 // Hide the scrollbar 1402 hideScrollingIndicator(true); 1403 1404 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1405 if (currentPage == null) { 1406 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1407 + " mNextPage " + mNextPage); 1408 return; 1409 } 1410 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1411 currentPage.setBackgroundAlpha(0.0f); 1412 } 1413 currentPage.setBackgroundAlphaMultiplier(1.0f); 1414 1415 mIsSmall = true; 1416 mShrinkState = shrinkState; 1417 1418 // we intercept and reject all touch events when we're small, so be sure to reset the state 1419 mTouchState = TOUCH_STATE_REST; 1420 mActivePointerId = INVALID_POINTER; 1421 1422 final Resources res = getResources(); 1423 final int screenWidth = getWidth(); 1424 final int screenHeight = getHeight(); 1425 1426 // How much the workspace shrinks when we enter all apps or customization mode 1427 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1428 1429 // Making the assumption that all pages have the same width as the 0th 1430 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1431 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1432 1433 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1434 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1435 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1436 1437 final int screenCount = getChildCount(); 1438 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1439 1440 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1441 float y = (isPortrait ? 1442 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1443 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1444 float finalAlpha = 1.0f; 1445 float extraShrinkFactor = 1.0f; 1446 1447 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1448 y = screenHeight - y - scaledPageHeight; 1449 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1450 // We shrink and disappear to nothing in the case of all apps 1451 // (which is when we shrink to the bottom) 1452 y = screenHeight - y - scaledPageHeight; 1453 finalAlpha = 0.0f; 1454 } else if (shrinkState == ShrinkState.MIDDLE) { 1455 y = screenHeight / 2 - scaledPageHeight / 2; 1456 finalAlpha = 1.0f; 1457 } 1458 1459 int duration; 1460 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1461 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1462 } else { 1463 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1464 } 1465 1466 // We animate all the screens to the centered position in workspace 1467 // At the same time, the screens become greyed/dimmed 1468 1469 // newX is initialized to the left-most position of the centered screens 1470 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1471 1472 // We are going to scale about the center of the view, so we need to adjust the positions 1473 // of the views accordingly 1474 x -= (pageWidth - scaledPageWidth) / 2.0f; 1475 y -= (pageHeight - scaledPageHeight) / 2.0f; 1476 1477 if (mAnimator != null) { 1478 mAnimator.cancel(); 1479 } 1480 1481 mAnimator = new AnimatorSet(); 1482 1483 final int childCount = getChildCount(); 1484 final float[] oldXs = new float[childCount]; 1485 final float[] oldYs = new float[childCount]; 1486 final float[] oldScaleXs = new float[childCount]; 1487 final float[] oldScaleYs = new float[childCount]; 1488 final float[] oldBackgroundAlphas = new float[childCount]; 1489 final float[] oldAlphas = new float[childCount]; 1490 final float[] oldRotationYs = new float[childCount]; 1491 final float[] newXs = new float[childCount]; 1492 final float[] newYs = new float[childCount]; 1493 final float[] newScaleXs = new float[childCount]; 1494 final float[] newScaleYs = new float[childCount]; 1495 final float[] newBackgroundAlphas = new float[childCount]; 1496 final float[] newAlphas = new float[childCount]; 1497 final float[] newRotationYs = new float[childCount]; 1498 1499 for (int i = 0; i < screenCount; i++) { 1500 final CellLayout cl = (CellLayout) getChildAt(i); 1501 1502 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1503 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1504 float rotationScaleY = getYScaleForScreen(i); 1505 1506 oldAlphas[i] = cl.getAlpha(); 1507 newAlphas[i] = finalAlpha; 1508 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1509 // if the CellLayout will be visible during the animation, force building its 1510 // hardware layer immediately so we don't see a blip later in the animation 1511 cl.buildChildrenLayer(); 1512 } 1513 if (animated) { 1514 oldXs[i] = cl.getX(); 1515 oldYs[i] = cl.getY(); 1516 oldScaleXs[i] = cl.getScaleX(); 1517 oldScaleYs[i] = cl.getScaleY(); 1518 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1519 oldRotationYs[i] = cl.getRotationY(); 1520 newXs[i] = x; 1521 newYs[i] = y; 1522 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1523 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1524 newBackgroundAlphas[i] = finalAlpha; 1525 newRotationYs[i] = rotation; 1526 } else { 1527 cl.setX((int)x); 1528 cl.setY((int)y); 1529 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1530 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1531 cl.setBackgroundAlpha(finalAlpha); 1532 cl.setAlpha(finalAlpha); 1533 cl.setRotationY(rotation); 1534 mShrinkAnimationListener.onAnimationEnd(null); 1535 } 1536 // increment newX for the next screen 1537 x += scaledPageWidth + extraScaledSpacing; 1538 } 1539 1540 float wallpaperOffset = 0.5f; 1541 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1542 int wallpaperTravelHeight = (int) (display.getHeight() * 1543 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1544 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1545 boolean isLandscape = display.getWidth() > display.getHeight(); 1546 1547 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1548 if (enableWallpaperEffects) { 1549 switch (shrinkState) { 1550 // animating in 1551 case MIDDLE: 1552 case SPRING_LOADED: 1553 wallpaperOffset = 0.5f; 1554 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1555 break; 1556 case BOTTOM_HIDDEN: 1557 case BOTTOM_VISIBLE: 1558 // allapps 1559 wallpaperOffset = 0.5f - offsetFromCenter; 1560 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1561 break; 1562 } 1563 } 1564 1565 setLayoutScale(1.0f); 1566 if (animated) { 1567 if (enableWallpaperEffects) { 1568 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1569 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1570 } 1571 1572 mSyncWallpaperOffsetWithScroll = false; 1573 1574 ValueAnimator animWithInterpolator = 1575 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1576 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1577 1578 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1579 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1580 final float newHorizontalWallpaperOffset = 0.5f; 1581 final float newVerticalWallpaperOffset = wallpaperOffset; 1582 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1583 public void onAnimationUpdate(float a, float b) { 1584 if (b == 0f) { 1585 // an optimization, and required for correct behavior. 1586 return; 1587 } 1588 fastInvalidate(); 1589 if (enableWallpaperEffects) { 1590 setHorizontalWallpaperOffset( 1591 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1592 setVerticalWallpaperOffset( 1593 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1594 } 1595 for (int i = 0; i < screenCount; i++) { 1596 final CellLayout cl = (CellLayout) getChildAt(i); 1597 cl.fastInvalidate(); 1598 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1599 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1600 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1601 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1602 cl.setFastBackgroundAlpha( 1603 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1604 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1605 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1606 } 1607 } 1608 }); 1609 mAnimator.playTogether(animWithInterpolator); 1610 mAnimator.addListener(mShrinkAnimationListener); 1611 mAnimator.start(); 1612 } else if (enableWallpaperEffects) { 1613 setVerticalWallpaperOffset(wallpaperOffset); 1614 setHorizontalWallpaperOffset(0.5f); 1615 updateWallpaperOffsetImmediately(); 1616 } 1617 setChildrenDrawnWithCacheEnabled(true); 1618 1619 showBackgroundGradientForAllApps(); 1620 } 1621 1622 /* 1623 * This interpolator emulates the rate at which the perceived scale of an object changes 1624 * as its distance from a camera increases. When this interpolator is applied to a scale 1625 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1626 * from the camera. 1627 */ 1628 static class ZInterpolator implements TimeInterpolator { 1629 private float focalLength; 1630 1631 public ZInterpolator(float foc) { 1632 focalLength = foc; 1633 } 1634 1635 public float getInterpolation(float input) { 1636 return (1.0f - focalLength / (focalLength + input)) / 1637 (1.0f - focalLength / (focalLength + 1.0f)); 1638 } 1639 } 1640 1641 /* 1642 * The exact reverse of ZInterpolator. 1643 */ 1644 static class InverseZInterpolator implements TimeInterpolator { 1645 private ZInterpolator zInterpolator; 1646 public InverseZInterpolator(float foc) { 1647 zInterpolator = new ZInterpolator(foc); 1648 } 1649 public float getInterpolation(float input) { 1650 return 1 - zInterpolator.getInterpolation(1 - input); 1651 } 1652 } 1653 1654 /* 1655 * ZInterpolator compounded with an ease-out. 1656 */ 1657 static class ZoomOutInterpolator implements TimeInterpolator { 1658 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1659 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1660 1661 public float getInterpolation(float input) { 1662 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1663 } 1664 } 1665 1666 /* 1667 * InvereZInterpolator compounded with an ease-out. 1668 */ 1669 static class ZoomInInterpolator implements TimeInterpolator { 1670 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1671 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1672 1673 public float getInterpolation(float input) { 1674 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1675 } 1676 } 1677 1678 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1679 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1680 1681 /* 1682 * 1683 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1684 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1685 * 1686 * These methods mark the appropriate pages as accepting drops (which alters their visual 1687 * appearance). 1688 * 1689 */ 1690 public void onDragStartedWithItem(View v) { 1691 mIsDragInProcess = true; 1692 1693 final Canvas canvas = new Canvas(); 1694 1695 // We need to add extra padding to the bitmap to make room for the glow effect 1696 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1697 1698 // The outline is used to visualize where the item will land if dropped 1699 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1700 } 1701 1702 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1703 mIsDragInProcess = true; 1704 1705 final Canvas canvas = new Canvas(); 1706 1707 // We need to add extra padding to the bitmap to make room for the glow effect 1708 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1709 1710 CellLayout cl = (CellLayout) getChildAt(0); 1711 1712 int[] size = cl.cellSpansToSize(spanX, spanY); 1713 1714 // The outline is used to visualize where the item will land if dropped 1715 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1716 } 1717 1718 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1719 // never dragged over 1720 public void onDragStopped(boolean success) { 1721 mLastDragView = null; 1722 // In the success case, DragController has already called onDragExit() 1723 if (!success) { 1724 doDragExit(null); 1725 } 1726 mIsDragInProcess = false; 1727 } 1728 1729 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1730 public void unshrink(CellLayout clThatWasClicked) { 1731 unshrink(clThatWasClicked, false); 1732 } 1733 1734 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1735 int newCurrentPage = indexOfChild(clThatWasClicked); 1736 if (mIsSmall) { 1737 if (springLoaded) { 1738 setLayoutScale(mSpringLoadedShrinkFactor); 1739 } 1740 scrollToNewPageWithoutMovingPages(newCurrentPage); 1741 unshrink(true, springLoaded); 1742 } 1743 } 1744 1745 1746 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1747 mShrinkState = ShrinkState.SPRING_LOADED; 1748 unshrink(clThatWasClicked, true); 1749 mDragTargetLayout = getCurrentDropLayout(); 1750 mDragTargetLayout.onDragEnter(); 1751 mDragTargetLayout.setIsDragOverlapping(true); 1752 showOutlines(); 1753 } 1754 1755 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1756 shrink(shrinkState); 1757 if (mDragTargetLayout != null) { 1758 mDragTargetLayout.onDragExit(); 1759 mDragTargetLayout = null; 1760 } 1761 } 1762 1763 public void exitWidgetResizeMode() { 1764 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1765 dragLayer.clearAllResizeFrames(); 1766 } 1767 1768 void unshrink(boolean animated) { 1769 unshrink(animated, false); 1770 } 1771 1772 void unshrink(boolean animated, boolean springLoaded) { 1773 mWaitingToShrink = false; 1774 if (mIsSmall) { 1775 float finalScaleFactor = 1.0f; 1776 float finalBackgroundAlpha = 0.0f; 1777 if (springLoaded) { 1778 finalScaleFactor = mSpringLoadedShrinkFactor; 1779 finalBackgroundAlpha = 1.0f; 1780 } else { 1781 mIsSmall = false; 1782 } 1783 if (mAnimator != null) { 1784 mAnimator.cancel(); 1785 } 1786 1787 mAnimator = new AnimatorSet(); 1788 final int screenCount = getChildCount(); 1789 1790 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1791 1792 final float[] oldTranslationXs = new float[getChildCount()]; 1793 final float[] oldTranslationYs = new float[getChildCount()]; 1794 final float[] oldScaleXs = new float[getChildCount()]; 1795 final float[] oldScaleYs = new float[getChildCount()]; 1796 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1797 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1798 final float[] oldAlphas = new float[getChildCount()]; 1799 final float[] oldRotationYs = new float[getChildCount()]; 1800 final float[] newTranslationXs = new float[getChildCount()]; 1801 final float[] newTranslationYs = new float[getChildCount()]; 1802 final float[] newScaleXs = new float[getChildCount()]; 1803 final float[] newScaleYs = new float[getChildCount()]; 1804 final float[] newBackgroundAlphas = new float[getChildCount()]; 1805 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1806 final float[] newAlphas = new float[getChildCount()]; 1807 final float[] newRotationYs = new float[getChildCount()]; 1808 1809 for (int i = 0; i < screenCount; i++) { 1810 final CellLayout cl = (CellLayout)getChildAt(i); 1811 float finalAlphaValue = 0f; 1812 float rotation = 0f; 1813 if (LauncherApplication.isScreenLarge()) { 1814 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1815 1816 if (i < mCurrentPage) { 1817 rotation = WORKSPACE_ROTATION; 1818 } else if (i > mCurrentPage) { 1819 rotation = -WORKSPACE_ROTATION; 1820 } 1821 } else { 1822 // Don't hide the side panes on the phone if we don't also update the side pages 1823 // alpha. See screenScrolled(). 1824 finalAlphaValue = 1f; 1825 } 1826 float finalAlphaMultiplierValue = 1f; 1827 1828 float translation = 0f; 1829 1830 // If the screen is not xlarge, then don't rotate the CellLayouts 1831 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1832 // pages. see unshrink(). 1833 if (LauncherApplication.isScreenLarge()) { 1834 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1835 } 1836 1837 oldAlphas[i] = cl.getAlpha(); 1838 newAlphas[i] = finalAlphaValue; 1839 if (animated) { 1840 oldTranslationXs[i] = cl.getTranslationX(); 1841 oldTranslationYs[i] = cl.getTranslationY(); 1842 oldScaleXs[i] = cl.getScaleX(); 1843 oldScaleYs[i] = cl.getScaleY(); 1844 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1845 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1846 oldRotationYs[i] = cl.getRotationY(); 1847 1848 newTranslationXs[i] = translation; 1849 newTranslationYs[i] = 0f; 1850 newScaleXs[i] = finalScaleFactor; 1851 newScaleYs[i] = finalScaleFactor; 1852 newBackgroundAlphas[i] = finalBackgroundAlpha; 1853 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1854 newRotationYs[i] = rotation; 1855 } else { 1856 cl.setTranslationX(translation); 1857 cl.setTranslationY(0.0f); 1858 cl.setScaleX(finalScaleFactor); 1859 cl.setScaleY(finalScaleFactor); 1860 cl.setBackgroundAlpha(0.0f); 1861 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1862 cl.setAlpha(finalAlphaValue); 1863 cl.setRotationY(rotation); 1864 mUnshrinkAnimationListener.onAnimationEnd(null); 1865 } 1866 } 1867 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1868 boolean isLandscape = display.getWidth() > display.getHeight(); 1869 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1870 if (enableWallpaperEffects) { 1871 switch (mShrinkState) { 1872 // animating out 1873 case MIDDLE: 1874 case SPRING_LOADED: 1875 if (animated) { 1876 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1877 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1878 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1879 } 1880 break; 1881 case BOTTOM_HIDDEN: 1882 case BOTTOM_VISIBLE: 1883 // all apps 1884 if (animated) { 1885 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1886 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1887 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1888 } 1889 break; 1890 } 1891 } 1892 if (animated) { 1893 ValueAnimator animWithInterpolator = 1894 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1895 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1896 1897 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1898 getHorizontalWallpaperOffset() : 0; 1899 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1900 getVerticalWallpaperOffset() : 0; 1901 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1902 wallpaperOffsetForCurrentScroll() : 0; 1903 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1904 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1905 public void onAnimationUpdate(float a, float b) { 1906 if (b == 0f) { 1907 // an optimization, but not required 1908 return; 1909 } 1910 fastInvalidate(); 1911 if (enableWallpaperEffects) { 1912 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1913 + b * newHorizontalWallpaperOffset); 1914 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1915 + b * newVerticalWallpaperOffset); 1916 } 1917 for (int i = 0; i < screenCount; i++) { 1918 final CellLayout cl = (CellLayout) getChildAt(i); 1919 cl.fastInvalidate(); 1920 cl.setFastTranslationX( 1921 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1922 cl.setFastTranslationY( 1923 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1924 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1925 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1926 cl.setFastBackgroundAlpha( 1927 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1928 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1929 b * newBackgroundAlphaMultipliers[i]); 1930 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1931 } 1932 } 1933 }); 1934 1935 ValueAnimator rotationAnim = 1936 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1937 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1938 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1939 public void onAnimationUpdate(float a, float b) { 1940 // don't invalidate workspace because we did it above 1941 if (b == 0f) { 1942 // an optimization, but not required 1943 return; 1944 } 1945 for (int i = 0; i < screenCount; i++) { 1946 final CellLayout cl = (CellLayout) getChildAt(i); 1947 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1948 } 1949 } 1950 }); 1951 1952 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1953 // If we call this when we're not animated, onAnimationEnd is never called on 1954 // the listener; make sure we only use the listener when we're actually animating 1955 mAnimator.addListener(mUnshrinkAnimationListener); 1956 mAnimator.start(); 1957 } else { 1958 if (enableWallpaperEffects) { 1959 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1960 setVerticalWallpaperOffset(0.5f); 1961 updateWallpaperOffsetImmediately(); 1962 } 1963 } 1964 } 1965 1966 if (!springLoaded) { 1967 hideBackgroundGradient(); 1968 } 1969 } 1970 1971 /** 1972 * Draw the View v into the given Canvas. 1973 * 1974 * @param v the view to draw 1975 * @param destCanvas the canvas to draw on 1976 * @param padding the horizontal and vertical padding to use when drawing 1977 */ 1978 private void drawDragView(View v, Canvas destCanvas, int padding) { 1979 final Rect clipRect = mTempRect; 1980 v.getDrawingRect(clipRect); 1981 1982 // For a TextView, adjust the clip rect so that we don't include the text label 1983 if (v instanceof BubbleTextView) { 1984 final BubbleTextView tv = (BubbleTextView) v; 1985 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1986 tv.getLayout().getLineTop(0); 1987 } else if (v instanceof TextView) { 1988 final TextView tv = (TextView) v; 1989 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1990 tv.getLayout().getLineTop(0); 1991 } else if (v instanceof FolderIcon) { 1992 clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1993 } 1994 1995 // Draw the View into the bitmap. 1996 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1997 // they set scrollX and scrollY to large values to achieve centered text 1998 1999 destCanvas.save(); 2000 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2001 destCanvas.clipRect(clipRect, Op.REPLACE); 2002 v.draw(destCanvas); 2003 destCanvas.restore(); 2004 } 2005 2006 /** 2007 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2008 * Responsibility for the bitmap is transferred to the caller. 2009 */ 2010 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2011 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2012 final Bitmap b = Bitmap.createBitmap( 2013 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2014 2015 canvas.setBitmap(b); 2016 drawDragView(v, canvas, padding); 2017 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2018 return b; 2019 } 2020 2021 /** 2022 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2023 * Responsibility for the bitmap is transferred to the caller. 2024 */ 2025 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2026 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2027 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2028 canvas.setBitmap(b); 2029 2030 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2031 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2032 (h - padding) / (float) orig.getHeight()); 2033 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2034 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2035 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2036 2037 // center the image 2038 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2039 2040 Paint p = new Paint(); 2041 p.setFilterBitmap(true); 2042 canvas.drawBitmap(orig, src, dst, p); 2043 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2044 2045 return b; 2046 } 2047 2048 /** 2049 * Creates a drag outline to represent a drop (that we don't have the actual information for 2050 * yet). May be changed in the future to alter the drop outline slightly depending on the 2051 * clip description mime data. 2052 */ 2053 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2054 Resources r = getResources(); 2055 final int outlineColor = r.getColor(R.color.drag_outline_color); 2056 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2057 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2058 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2059 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2060 final Bitmap b = Bitmap.createBitmap( 2061 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2062 2063 canvas.setBitmap(b); 2064 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2065 rectRadius, rectRadius, mExternalDragOutlinePaint); 2066 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2067 return b; 2068 } 2069 2070 /** 2071 * Returns a new bitmap to show when the given View is being dragged around. 2072 * Responsibility for the bitmap is transferred to the caller. 2073 */ 2074 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2075 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2076 final Bitmap b = Bitmap.createBitmap( 2077 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2078 2079 canvas.setBitmap(b); 2080 canvas.drawBitmap(mDragOutline, 0, 0, null); 2081 drawDragView(v, canvas, padding); 2082 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2083 2084 return b; 2085 } 2086 2087 void startDrag(CellLayout.CellInfo cellInfo) { 2088 View child = cellInfo.cell; 2089 2090 // Make sure the drag was started by a long press as opposed to a long click. 2091 if (!child.isInTouchMode()) { 2092 return; 2093 } 2094 2095 mDragInfo = cellInfo; 2096 2097 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2098 current.onDragChild(child); 2099 2100 child.clearFocus(); 2101 child.setPressed(false); 2102 2103 final Canvas canvas = new Canvas(); 2104 2105 // We need to add extra padding to the bitmap to make room for the glow effect 2106 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2107 2108 // The outline is used to visualize where the item will land if dropped 2109 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2110 2111 // The drag bitmap follows the touch point around on the screen 2112 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2113 2114 final int bmpWidth = b.getWidth(); 2115 final int bmpHeight = b.getHeight(); 2116 2117 child.getLocationOnScreen(mTempXY); 2118 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2119 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2120 2121 Rect dragRect = null; 2122 if (child instanceof BubbleTextView) { 2123 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2124 int top = child.getPaddingTop(); 2125 int left = (bmpWidth - iconSize) / 2; 2126 int right = left + iconSize; 2127 int bottom = top + iconSize; 2128 dragRect = new Rect(left, top, right, bottom); 2129 } else if (child instanceof FolderIcon) { 2130 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 2131 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2132 } 2133 2134 mLauncher.lockScreenOrientation(); 2135 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2136 DragController.DRAG_ACTION_MOVE, dragRect); 2137 b.recycle(); 2138 } 2139 2140 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2141 boolean insertAtFirst, int intersectX, int intersectY) { 2142 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2143 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2144 2145 final int[] cellXY = new int[2]; 2146 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2147 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2148 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2149 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2150 cellXY[0], cellXY[1]); 2151 } 2152 2153 private void setPositionForDropAnimation( 2154 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2155 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2156 2157 // Based on the position of the drag view, find the top left of the original view 2158 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2159 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2160 2161 CellLayout layout = (CellLayout) parent; 2162 2163 // Set its old pos (in the new parent's coordinates); it will be animated 2164 // in animateViewIntoPosition after the next layout pass 2165 lp.oldX = viewX - (layout.getLeft() + layout.getPaddingLeft() - mScrollX); 2166 lp.oldY = viewY - (layout.getTop() + layout.getPaddingTop() - mScrollY); 2167 } 2168 2169 public void animateViewIntoPosition(final View view, final int fromX, final int fromY, 2170 final int dX, final int dY, final Runnable animationEndRunnable) { 2171 2172 // Calculate the duration of the animation based on the object's distance 2173 final float dist = (float) Math.sqrt(dX*dX + dY*dY); 2174 final Resources res = getResources(); 2175 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2176 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2177 if (dist < maxDist) { 2178 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2179 } 2180 2181 if (mDropAnim != null) { 2182 mDropAnim.end(); 2183 } 2184 mDropAnim = new ValueAnimator(); 2185 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2186 2187 // The view is invisible during the animation; we render it manually. 2188 mDropAnim.addListener(new AnimatorListenerAdapter() { 2189 public void onAnimationStart(Animator animation) { 2190 // Set this here so that we don't render it until the animation begins 2191 mDropView = view; 2192 } 2193 2194 public void onAnimationEnd(Animator animation) { 2195 animationEndRunnable.run(); 2196 } 2197 }); 2198 2199 mDropAnim.setDuration(duration); 2200 mDropAnim.setFloatValues(0.0f, 1.0f); 2201 mDropAnim.removeAllUpdateListeners(); 2202 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2203 public void onAnimationUpdate(ValueAnimator animation) { 2204 final float percent = (Float) animation.getAnimatedValue(); 2205 // Invalidate the old position 2206 invalidate(mDropViewPos[0], mDropViewPos[1], 2207 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2208 2209 mDropViewPos[0] = fromX + (int) (percent * dX + 0.5f); 2210 mDropViewPos[1] = fromY + (int) (percent * dY + 0.5f); 2211 invalidate(mDropViewPos[0], mDropViewPos[1], 2212 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2213 } 2214 }); 2215 2216 mDropAnim.start(); 2217 } 2218 2219 /* 2220 * We should be careful that this method cannot result in any synchronous requestLayout() 2221 * calls, as it is called from onLayout(). 2222 */ 2223 public void animateViewIntoPosition(final View view) { 2224 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2225 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2226 2227 // Convert the animation params to be relative to the Workspace, not the CellLayout 2228 final int fromX = lp.oldX + parent.getLeft() + parent.getPaddingLeft(); 2229 final int fromY = lp.oldY + parent.getTop() + parent.getPaddingTop(); 2230 2231 final int dx = lp.x - lp.oldX; 2232 final int dy = lp.y - lp.oldY; 2233 2234 Runnable animationEndRunnable = new Runnable() { 2235 public void run() { 2236 if (mDropView != null) { 2237 mDropView.setVisibility(View.VISIBLE); 2238 mDropView = null; 2239 } 2240 } 2241 }; 2242 animateViewIntoPosition(view, fromX, fromY, dx, dy, animationEndRunnable); 2243 } 2244 2245 /** 2246 * {@inheritDoc} 2247 */ 2248 public boolean acceptDrop(DragObject d) { 2249 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2250 if (d.dragSource != this) { 2251 // Don't accept the drop if we're not over a screen at time of drop 2252 if (mDragTargetLayout == null) { 2253 return false; 2254 } 2255 2256 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2257 d.dragView, mDragViewVisualCenter); 2258 2259 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2260 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2261 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2262 2263 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2264 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2265 2266 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2267 return true; 2268 } 2269 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2270 mTargetCell)) { 2271 return true; 2272 } 2273 2274 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2275 2276 // Don't accept the drop if there's no room for the item 2277 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2278 mLauncher.showOutOfSpaceMessage(); 2279 return false; 2280 } 2281 } 2282 return true; 2283 } 2284 2285 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2286 boolean considerTimeout) { 2287 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2288 2289 boolean hasntMoved = mDragInfo != null 2290 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2291 2292 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2293 return false; 2294 } 2295 2296 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2297 boolean willBecomeShortcut = 2298 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2299 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2300 2301 return (aboveShortcut && willBecomeShortcut); 2302 } 2303 2304 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2305 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2306 if (dropOverView instanceof FolderIcon) { 2307 FolderIcon fi = (FolderIcon) dropOverView; 2308 if (fi.acceptDrop(dragInfo)) { 2309 return true; 2310 } 2311 } 2312 return false; 2313 } 2314 2315 boolean createUserFolderIfNecessary(View newView, CellLayout target, 2316 int[] targetCell, boolean external) { 2317 View v = target.getChildAt(targetCell[0], targetCell[1]); 2318 boolean hasntMoved = mDragInfo != null 2319 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2320 2321 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2322 mCreateUserFolderOnDrop = false; 2323 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2324 2325 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2326 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2327 2328 if (aboveShortcut && willBecomeShortcut) { 2329 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2330 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2331 // if the drag started here, we need to remove it from the workspace 2332 if (!external) { 2333 int fromScreen = mDragInfo.screen; 2334 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2335 sourceLayout.removeView(newView); 2336 } 2337 2338 target.removeView(v); 2339 FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]); 2340 destInfo.cellX = -1; 2341 destInfo.cellY = -1; 2342 sourceInfo.cellX = -1; 2343 sourceInfo.cellY = -1; 2344 fi.addItem(destInfo); 2345 fi.addItem(sourceInfo); 2346 return true; 2347 } 2348 return false; 2349 } 2350 2351 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2352 Object dragInfo, boolean external) { 2353 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2354 if (dropOverView instanceof FolderIcon) { 2355 FolderIcon fi = (FolderIcon) dropOverView; 2356 if (fi.acceptDrop(dragInfo)) { 2357 fi.onDrop(dragInfo); 2358 2359 // if the drag started here, we need to remove it from the workspace 2360 if (!external) { 2361 int fromScreen = mDragInfo.screen; 2362 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2363 sourceLayout.removeView(newView); 2364 } 2365 return true; 2366 } 2367 } 2368 return false; 2369 } 2370 2371 public void onDrop(DragObject d) { 2372 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2373 mDragViewVisualCenter); 2374 2375 // We want the point to be mapped to the dragTarget. 2376 if (mDragTargetLayout != null) { 2377 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2378 } 2379 2380 // When you are in customization mode and drag to a particular screen, make that the 2381 // new current/default screen, so any subsequent taps add items to that screen 2382 if (!mLauncher.isAllAppsVisible()) { 2383 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2384 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2385 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2386 } 2387 } 2388 CellLayout dropTargetLayout = mDragTargetLayout; 2389 2390 if (d.dragSource != this) { 2391 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2392 (int) mDragViewVisualCenter[1] }; 2393 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d.dragView); 2394 } else if (mDragInfo != null) { 2395 final View cell = mDragInfo.cell; 2396 2397 if (dropTargetLayout != null) { 2398 // Move internally 2399 final int screen = (mTargetCell[0] < 0) ? 2400 mDragInfo.screen : indexOfChild(dropTargetLayout); 2401 2402 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2403 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2404 // First we find the cell nearest to point at which the item is 2405 // dropped, without any consideration to whether there is an item there. 2406 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2407 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2408 // If the item being dropped is a shortcut and the nearest drop 2409 // cell also contains a shortcut, then create a folder with the two shortcuts. 2410 boolean dropInscrollArea = mCurrentPage != screen; 2411 2412 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2413 mTargetCell, false)) { 2414 return; 2415 } 2416 2417 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2418 d.dragInfo, false)) { 2419 return; 2420 } 2421 2422 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2423 // we need to find the nearest cell location that is vacant 2424 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2425 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2426 dropTargetLayout, mTargetCell); 2427 2428 if (dropInscrollArea && mShrinkState != ShrinkState.SPRING_LOADED) { 2429 snapToPage(screen); 2430 } 2431 2432 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2433 if (screen != mDragInfo.screen) { 2434 // Reparent the view 2435 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2436 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, 2437 mDragInfo.spanY); 2438 } 2439 2440 2441 // update the item's position after drop 2442 final ItemInfo info = (ItemInfo) cell.getTag(); 2443 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2444 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2445 lp.cellX = mTargetCell[0]; 2446 lp.cellY = mTargetCell[1]; 2447 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2448 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2449 2450 if (cell instanceof LauncherAppWidgetHostView) { 2451 final CellLayout cellLayout = dropTargetLayout; 2452 // We post this call so that the widget has a chance to be placed 2453 // in its final location 2454 2455 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2456 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2457 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2458 final Runnable resizeRunnable = new Runnable() { 2459 public void run() { 2460 DragLayer dragLayer = 2461 (DragLayer) mLauncher.findViewById(R.id.drag_layer); 2462 dragLayer.addResizeFrame(info, hostView, cellLayout); 2463 } 2464 }; 2465 post(new Runnable() { 2466 public void run() { 2467 if (!isPageMoving()) { 2468 resizeRunnable.run(); 2469 } else { 2470 mDelayedResizeRunnable = resizeRunnable; 2471 } 2472 } 2473 }); 2474 } 2475 } 2476 2477 LauncherModel.moveItemInDatabase(mLauncher, info, 2478 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2479 lp.cellX, lp.cellY); 2480 } 2481 } 2482 2483 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2484 2485 int loc[] = new int[2]; 2486 getViewLocationRelativeToSelf(d.dragView, loc); 2487 2488 // Prepare it to be animated into its new position 2489 // This must be called after the view has been re-parented 2490 setPositionForDropAnimation(d.dragView, loc[0], loc[1], parent, cell); 2491 parent.onDropChild(cell, true); 2492 } 2493 } 2494 2495 public void getViewLocationRelativeToSelf(View v, int[] location) { 2496 getLocationOnScreen(location); 2497 int x = location[0]; 2498 int y = location[1]; 2499 2500 v.getLocationOnScreen(location); 2501 int vX = location[0]; 2502 int vY = location[1]; 2503 2504 location[0] = vX - x; 2505 location[1] = vY - y; 2506 } 2507 2508 public void onDragEnter(DragObject d) { 2509 mLastDragOverView = null; 2510 if (mDragTargetLayout != null) { 2511 mDragTargetLayout.onDragExit(); 2512 mDragTargetLayout = null; // Reset the drag state 2513 } 2514 2515 if (!mIsSmall) { 2516 mDragTargetLayout = getCurrentDropLayout(); 2517 mDragTargetLayout.onDragEnter(); 2518 2519 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2520 // don't need to show the outlines 2521 if (!LauncherApplication.isScreenLarge()) { 2522 showOutlines(); 2523 } 2524 } 2525 } 2526 2527 public DropTarget getDropTargetDelegate(DragObject d) { 2528 return null; 2529 } 2530 2531 /** 2532 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2533 * in the returned structure related to the widgets that match the drop (or a null list if it is 2534 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2535 */ 2536 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2537 final LauncherModel model = mLauncher.getModel(); 2538 final ClipDescription desc = event.getClipDescription(); 2539 final int mimeTypeCount = desc.getMimeTypeCount(); 2540 for (int i = 0; i < mimeTypeCount; ++i) { 2541 final String mimeType = desc.getMimeType(i); 2542 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2543 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2544 } else { 2545 final List<WidgetMimeTypeHandlerData> widgets = 2546 model.resolveWidgetsForMimeType(mContext, mimeType); 2547 if (widgets.size() > 0) { 2548 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2549 } 2550 } 2551 } 2552 return null; 2553 } 2554 2555 /** 2556 * Global drag and drop handler 2557 */ 2558 @Override 2559 public boolean onDragEvent(DragEvent event) { 2560 final ClipDescription desc = event.getClipDescription(); 2561 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2562 final int[] pos = new int[2]; 2563 layout.getLocationOnScreen(pos); 2564 // We need to offset the drag coordinates to layout coordinate space 2565 final int x = (int) event.getX() - pos[0]; 2566 final int y = (int) event.getY() - pos[1]; 2567 2568 switch (event.getAction()) { 2569 case DragEvent.ACTION_DRAG_STARTED: { 2570 // Validate this drag 2571 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2572 if (test != null) { 2573 boolean isShortcut = (test.second == null); 2574 if (isShortcut) { 2575 // Check if we have enough space on this screen to add a new shortcut 2576 if (!layout.findCellForSpan(pos, 1, 1)) { 2577 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2578 Toast.LENGTH_SHORT).show(); 2579 return false; 2580 } 2581 } 2582 } else { 2583 // Show error message if we couldn't accept any of the items 2584 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2585 Toast.LENGTH_SHORT).show(); 2586 return false; 2587 } 2588 2589 // Create the drag outline 2590 // We need to add extra padding to the bitmap to make room for the glow effect 2591 final Canvas canvas = new Canvas(); 2592 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2593 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2594 2595 // Show the current page outlines to indicate that we can accept this drop 2596 showOutlines(); 2597 layout.setIsDragOccuring(true); 2598 layout.onDragEnter(); 2599 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2600 2601 return true; 2602 } 2603 case DragEvent.ACTION_DRAG_LOCATION: 2604 // Visualize the drop location 2605 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2606 return true; 2607 case DragEvent.ACTION_DROP: { 2608 // Try and add any shortcuts 2609 final LauncherModel model = mLauncher.getModel(); 2610 final ClipData data = event.getClipData(); 2611 2612 // We assume that the mime types are ordered in descending importance of 2613 // representation. So we enumerate the list of mime types and alert the 2614 // user if any widgets can handle the drop. Only the most preferred 2615 // representation will be handled. 2616 pos[0] = x; 2617 pos[1] = y; 2618 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2619 if (test != null) { 2620 final int index = test.first; 2621 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2622 final boolean isShortcut = (widgets == null); 2623 final String mimeType = desc.getMimeType(index); 2624 if (isShortcut) { 2625 final Intent intent = data.getItemAt(index).getIntent(); 2626 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2627 onDropExternal(new int[] { x, y }, info, layout, false); 2628 } else { 2629 if (widgets.size() == 1) { 2630 // If there is only one item, then go ahead and add and configure 2631 // that widget 2632 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2633 final PendingAddWidgetInfo createInfo = 2634 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2635 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2636 } else { 2637 // Show the widget picker dialog if there is more than one widget 2638 // that can handle this data type 2639 final InstallWidgetReceiver.WidgetListAdapter adapter = 2640 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2641 data, widgets, layout, mCurrentPage, pos); 2642 final AlertDialog.Builder builder = 2643 new AlertDialog.Builder(mContext); 2644 builder.setAdapter(adapter, adapter); 2645 builder.setCancelable(true); 2646 builder.setTitle(mContext.getString( 2647 R.string.external_drop_widget_pick_title)); 2648 builder.setIcon(R.drawable.ic_no_applications); 2649 builder.show(); 2650 } 2651 } 2652 } 2653 return true; 2654 } 2655 case DragEvent.ACTION_DRAG_ENDED: 2656 // Hide the page outlines after the drop 2657 layout.setIsDragOccuring(false); 2658 layout.onDragExit(); 2659 hideOutlines(); 2660 return true; 2661 } 2662 return super.onDragEvent(event); 2663 } 2664 2665 /* 2666 * 2667 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2668 * coordinate space. The argument xy is modified with the return result. 2669 * 2670 */ 2671 void mapPointFromSelfToChild(View v, float[] xy) { 2672 mapPointFromSelfToChild(v, xy, null); 2673 } 2674 2675 /* 2676 * 2677 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2678 * coordinate space. The argument xy is modified with the return result. 2679 * 2680 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2681 * computing it itself; we use this to avoid redundant matrix inversions in 2682 * findMatchingPageForDragOver 2683 * 2684 */ 2685 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2686 if (cachedInverseMatrix == null) { 2687 v.getMatrix().invert(mTempInverseMatrix); 2688 cachedInverseMatrix = mTempInverseMatrix; 2689 } 2690 xy[0] = xy[0] + mScrollX - v.getLeft(); 2691 xy[1] = xy[1] + mScrollY - v.getTop(); 2692 cachedInverseMatrix.mapPoints(xy); 2693 } 2694 2695 /* 2696 * 2697 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2698 * the parent View's coordinate space. The argument xy is modified with the return result. 2699 * 2700 */ 2701 void mapPointFromChildToSelf(View v, float[] xy) { 2702 v.getMatrix().mapPoints(xy); 2703 xy[0] -= (mScrollX - v.getLeft()); 2704 xy[1] -= (mScrollY - v.getTop()); 2705 } 2706 2707 static private float squaredDistance(float[] point1, float[] point2) { 2708 float distanceX = point1[0] - point2[0]; 2709 float distanceY = point2[1] - point2[1]; 2710 return distanceX * distanceX + distanceY * distanceY; 2711 } 2712 2713 /* 2714 * 2715 * Returns true if the passed CellLayout cl overlaps with dragView 2716 * 2717 */ 2718 boolean overlaps(CellLayout cl, DragView dragView, 2719 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2720 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2721 final float[] draggedItemTopLeft = mTempDragCoordinates; 2722 draggedItemTopLeft[0] = dragViewX; 2723 draggedItemTopLeft[1] = dragViewY; 2724 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2725 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2726 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2727 2728 // Transform the dragged item's top left coordinates 2729 // to the CellLayout's local coordinates 2730 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2731 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2732 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2733 2734 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2735 // Transform the dragged item's bottom right coordinates 2736 // to the CellLayout's local coordinates 2737 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2738 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2739 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2740 2741 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2742 float overlap = (overlapRegionRight - overlapRegionLeft) * 2743 (overlapRegionBottom - overlapRegionTop); 2744 if (overlap > 0) { 2745 return true; 2746 } 2747 } 2748 } 2749 return false; 2750 } 2751 2752 /* 2753 * 2754 * This method returns the CellLayout that is currently being dragged to. In order to drag 2755 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2756 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2757 * 2758 * Return null if no CellLayout is currently being dragged over 2759 * 2760 */ 2761 private CellLayout findMatchingPageForDragOver( 2762 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2763 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2764 // with the item being dragged and then choose the one that's closest to the touch point 2765 final int screenCount = getChildCount(); 2766 CellLayout bestMatchingScreen = null; 2767 float smallestDistSoFar = Float.MAX_VALUE; 2768 2769 for (int i = 0; i < screenCount; i++) { 2770 CellLayout cl = (CellLayout)getChildAt(i); 2771 2772 final float[] touchXy = mTempTouchCoordinates; 2773 touchXy[0] = originX + offsetX; 2774 touchXy[1] = originY + offsetY; 2775 2776 // Transform the touch coordinates to the CellLayout's local coordinates 2777 // If the touch point is within the bounds of the cell layout, we can return immediately 2778 cl.getMatrix().invert(mTempInverseMatrix); 2779 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2780 2781 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2782 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2783 return cl; 2784 } 2785 2786 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2787 // Get the center of the cell layout in screen coordinates 2788 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2789 cellLayoutCenter[0] = cl.getWidth()/2; 2790 cellLayoutCenter[1] = cl.getHeight()/2; 2791 mapPointFromChildToSelf(cl, cellLayoutCenter); 2792 2793 touchXy[0] = originX + offsetX; 2794 touchXy[1] = originY + offsetY; 2795 2796 // Calculate the distance between the center of the CellLayout 2797 // and the touch point 2798 float dist = squaredDistance(touchXy, cellLayoutCenter); 2799 2800 if (dist < smallestDistSoFar) { 2801 smallestDistSoFar = dist; 2802 bestMatchingScreen = cl; 2803 } 2804 } 2805 } 2806 return bestMatchingScreen; 2807 } 2808 2809 // This is used to compute the visual center of the dragView. This point is then 2810 // used to visualize drop locations and determine where to drop an item. The idea is that 2811 // the visual center represents the user's interpretation of where the item is, and hence 2812 // is the appropriate point to use when determining drop location. 2813 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2814 DragView dragView, float[] recycle) { 2815 float res[]; 2816 if (recycle == null) { 2817 res = new float[2]; 2818 } else { 2819 res = recycle; 2820 } 2821 2822 // First off, the drag view has been shifted in a way that is not represented in the 2823 // x and y values or the x/yOffsets. Here we account for that shift. 2824 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2825 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2826 2827 // These represent the visual top and left of drag view if a dragRect was provided. 2828 // If a dragRect was not provided, then they correspond to the actual view left and 2829 // top, as the dragRect is in that case taken to be the entire dragView. 2830 // R.dimen.dragViewOffsetY. 2831 int left = x - xOffset; 2832 int top = y - yOffset; 2833 2834 // In order to find the visual center, we shift by half the dragRect 2835 res[0] = left + dragView.getDragRegion().width() / 2; 2836 res[1] = top + dragView.getDragRegion().height() / 2; 2837 2838 return res; 2839 } 2840 2841 public void onDragOver(DragObject d) { 2842 // When touch is inside the scroll area, skip dragOver actions for the current screen 2843 if (!mInScrollArea) { 2844 CellLayout layout; 2845 int left = d.x - d.xOffset; 2846 int top = d.y - d.yOffset; 2847 2848 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2849 d.dragView, mDragViewVisualCenter); 2850 2851 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2852 if (shrunken) { 2853 mLastDragView = d.dragView; 2854 mLastDragOriginX = left; 2855 mLastDragOriginY = top; 2856 mLastDragXOffset = d.xOffset; 2857 mLastDragYOffset = d.yOffset; 2858 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset); 2859 2860 if (layout != null && layout != mDragTargetLayout) { 2861 if (mDragTargetLayout != null) { 2862 mDragTargetLayout.setIsDragOverlapping(false); 2863 mDragTargetLayout.clearDragOutlines(); 2864 } 2865 mDragTargetLayout = layout; 2866 2867 // In spring-loaded mode, we still want the user to be able to hover over a 2868 // full screen (which is traditionally set to not accept drops) if they want 2869 // to get to pages beyond the screen that is full. 2870 boolean isInSpringLoadedMode = (mShrinkState == ShrinkState.SPRING_LOADED); 2871 boolean allowDragOver = (mDragTargetLayout != null); 2872 if (allowDragOver) { 2873 if (isInSpringLoadedMode) { 2874 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2875 } 2876 mDragTargetLayout.setIsDragOverlapping(true); 2877 } 2878 } 2879 } else { 2880 layout = getCurrentDropLayout(); 2881 if (layout != mDragTargetLayout) { 2882 if (mDragTargetLayout != null) { 2883 mDragTargetLayout.onDragExit(); 2884 } 2885 layout.onDragEnter(); 2886 mDragTargetLayout = layout; 2887 } 2888 } 2889 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2890 layout = getCurrentDropLayout(); 2891 2892 final ItemInfo item = (ItemInfo) d.dragInfo; 2893 if (d.dragInfo instanceof LauncherAppWidgetInfo) { 2894 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo) d.dragInfo; 2895 2896 if (widgetInfo.spanX == -1) { 2897 // Calculate the grid spans needed to fit this widget 2898 int[] spans = layout.rectToCell(widgetInfo.minWidth, 2899 widgetInfo.minHeight, null); 2900 item.spanX = spans[0]; 2901 item.spanY = spans[1]; 2902 } 2903 } 2904 2905 if (mDragTargetLayout != null) { 2906 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2907 // We want the point to be mapped to the dragTarget. 2908 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2909 ItemInfo info = (ItemInfo) d.dragInfo; 2910 2911 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2912 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2913 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2914 mTargetCell[1]); 2915 2916 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2917 mTargetCell, false); 2918 boolean isOverFolder = dragOverView instanceof FolderIcon; 2919 if (dragOverView != mLastDragOverView) { 2920 cancelFolderCreation(); 2921 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2922 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2923 } 2924 } 2925 2926 if (userFolderPending && dragOverView != mLastDragOverView) { 2927 mFolderCreationAlarm.setOnAlarmListener(new 2928 FolderCreationAlarmListener(dragOverView)); 2929 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2930 } 2931 2932 if (dragOverView != mLastDragOverView && isOverFolder) { 2933 2934 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2935 if (mDragTargetLayout != null) { 2936 mDragTargetLayout.clearDragOutlines(); 2937 } 2938 } 2939 mLastDragOverView = dragOverView; 2940 2941 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2942 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2943 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2944 item.spanX, item.spanY); 2945 } 2946 } 2947 } 2948 } 2949 } 2950 2951 private void cancelFolderCreation() { 2952 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2953 mDragFolderRingAnimator.animateToNaturalState(); 2954 } 2955 mCreateUserFolderOnDrop = false; 2956 mFolderCreationAlarm.cancelAlarm(); 2957 } 2958 2959 class FolderCreationAlarmListener implements OnAlarmListener { 2960 View v; 2961 2962 public FolderCreationAlarmListener(View v) { 2963 this.v = v; 2964 } 2965 2966 public void onAlarm(Alarm alarm) { 2967 int tvLocation[] = new int[2]; 2968 int wsLocation[] = new int[2]; 2969 v.getLocationInWindow(tvLocation); 2970 getLocationInWindow(wsLocation); 2971 2972 if (mCellWidth < 0 || mCellHeight < 0 && mDragTargetLayout != null) { 2973 mCellWidth = mDragTargetLayout.getCellWidth(); 2974 mCellHeight = mDragTargetLayout.getCellHeight(); 2975 } 2976 2977 int x = tvLocation[0] - wsLocation[0] + v.getMeasuredWidth() / 2; 2978 int y = tvLocation[1] - wsLocation[1] + FolderRingAnimator.sPreviewSize / 2; 2979 2980 if (mDragFolderRingAnimator == null) { 2981 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2982 } 2983 mDragFolderRingAnimator.setLocation(x, y); 2984 mDragFolderRingAnimator.animateToAcceptState(); 2985 showFolderAccept(mDragFolderRingAnimator); 2986 mCreateUserFolderOnDrop = true; 2987 if (mDragTargetLayout != null) { 2988 mDragTargetLayout.clearDragOutlines(); 2989 } 2990 } 2991 } 2992 2993 private void doDragExit(DragObject d) { 2994 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2995 mDragFolderRingAnimator.animateToNaturalState(); 2996 } 2997 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2998 if (d != null) { 2999 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 3000 } 3001 } 3002 mFolderCreationAlarm.cancelAlarm(); 3003 3004 if (mDragTargetLayout != null) { 3005 mDragTargetLayout.onDragExit(); 3006 } 3007 if (!mIsPageMoving) { 3008 hideOutlines(); 3009 } 3010 clearAllHovers(); 3011 } 3012 3013 public void onDragExit(DragObject d) { 3014 doDragExit(d); 3015 } 3016 3017 @Override 3018 public void getHitRect(Rect outRect) { 3019 // We want the workspace to have the whole area of the display (it will find the correct 3020 // cell layout to drop to in the existing drag/drop logic. 3021 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3022 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3023 } 3024 3025 /** 3026 * Add the item specified by dragInfo to the given layout. 3027 * @return true if successful 3028 */ 3029 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3030 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3031 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3032 return true; 3033 } 3034 mLauncher.showOutOfSpaceMessage(); 3035 return false; 3036 } 3037 3038 private void onDropExternal(int[] touchXY, Object dragInfo, 3039 CellLayout cellLayout, boolean insertAtFirst) { 3040 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3041 } 3042 3043 /** 3044 * Drop an item that didn't originate on one of the workspace screens. 3045 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3046 * come from another app altogether. 3047 * 3048 * NOTE: This can also be called when we are outside of a drag event, when we want 3049 * to add an item to one of the workspace screens. 3050 */ 3051 private void onDropExternal(int[] touchXY, Object dragInfo, 3052 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3053 int screen = indexOfChild(cellLayout); 3054 if (screen != mCurrentPage && mShrinkState != ShrinkState.SPRING_LOADED) { 3055 snapToPage(screen); 3056 } 3057 if (dragInfo instanceof PendingAddItemInfo) { 3058 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3059 // When dragging and dropping from customization tray, we deal with creating 3060 // widgets/shortcuts/folders in a slightly different way 3061 switch (info.itemType) { 3062 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3063 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3064 break; 3065 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3066 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3067 break; 3068 default: 3069 throw new IllegalStateException("Unknown item type: " + info.itemType); 3070 } 3071 cellLayout.onDragExit(); 3072 } else { 3073 // This is for other drag/drop cases, like dragging from All Apps 3074 ItemInfo info = (ItemInfo) dragInfo; 3075 View view = null; 3076 3077 switch (info.itemType) { 3078 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3079 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3080 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3081 // Came from all apps -- make a copy 3082 info = new ShortcutInfo((ApplicationInfo) info); 3083 } 3084 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3085 (ShortcutInfo) info); 3086 break; 3087 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3088 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3089 (FolderInfo) info, mIconCache); 3090 break; 3091 default: 3092 throw new IllegalStateException("Unknown item type: " + info.itemType); 3093 } 3094 3095 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 3096 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 3097 // First we find the cell nearest to point at which the item is 3098 // dropped, without any consideration to whether there is an item there. 3099 if (touchXY != null) { 3100 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3101 cellLayout, mTargetCell); 3102 if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true)) { 3103 return; 3104 } 3105 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, dragInfo, true)) { 3106 return; 3107 } 3108 } 3109 3110 if (touchXY != null) { 3111 // when dragging and dropping, just find the closest free spot 3112 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3113 cellLayout, mTargetCell); 3114 } else { 3115 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3116 } 3117 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3118 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3119 cellLayout.onDropChild(view, false); 3120 cellLayout.animateDrop(); 3121 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3122 cellLayout.getChildrenLayout().measureChild(view); 3123 3124 if (dragView != null) { 3125 // we have the visual center of the drag view, we need to find the actual 3126 // left and top of the dragView. 3127 int loc[] = new int[2]; 3128 getViewLocationRelativeToSelf(dragView, loc); 3129 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3130 } 3131 3132 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3133 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3134 lp.cellX, lp.cellY); 3135 } 3136 } 3137 3138 /** 3139 * Return the current {@link CellLayout}, correctly picking the destination 3140 * screen while a scroll is in progress. 3141 */ 3142 public CellLayout getCurrentDropLayout() { 3143 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3144 } 3145 3146 /** 3147 * Return the current CellInfo describing our current drag; this method exists 3148 * so that Launcher can sync this object with the correct info when the activity is created/ 3149 * destroyed 3150 * 3151 */ 3152 public CellLayout.CellInfo getDragInfo() { 3153 return mDragInfo; 3154 } 3155 3156 /** 3157 * Calculate the nearest cell where the given object would be dropped. 3158 * 3159 * pixelX and pixelY should be in the coordinate system of layout 3160 */ 3161 private int[] findNearestVacantArea(int pixelX, int pixelY, 3162 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3163 return layout.findNearestVacantArea( 3164 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3165 } 3166 3167 /** 3168 * Calculate the nearest cell where the given object would be dropped. 3169 * 3170 * pixelX and pixelY should be in the coordinate system of layout 3171 */ 3172 private int[] findNearestArea(int pixelX, int pixelY, 3173 int spanX, int spanY, CellLayout layout, int[] recycle) { 3174 return layout.findNearestArea( 3175 pixelX, pixelY, spanX, spanY, recycle); 3176 } 3177 3178 void setup(Launcher launcher, DragController dragController) { 3179 mLauncher = launcher; 3180 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3181 mDragController = dragController; 3182 } 3183 3184 /** 3185 * Called at the end of a drag which originated on the workspace. 3186 */ 3187 public void onDropCompleted(View target, DragObject d, boolean success) { 3188 if (success) { 3189 if (target != this && mDragInfo != null) { 3190 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3191 cellLayout.removeView(mDragInfo.cell); 3192 if (mDragInfo.cell instanceof DropTarget) { 3193 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3194 } 3195 // final Object tag = mDragInfo.cell.getTag(); 3196 } 3197 } else if (mDragInfo != null) { 3198 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3199 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3200 // moved into DragController.cancelDrag(). 3201 doDragExit(null); 3202 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3203 } 3204 mLauncher.unlockScreenOrientation(); 3205 mDragOutline = null; 3206 mDragInfo = null; 3207 } 3208 3209 @Override 3210 public void onDragViewVisible() { 3211 ((View) mDragInfo.cell).setVisibility(View.GONE); 3212 } 3213 3214 public boolean isDropEnabled() { 3215 return true; 3216 } 3217 3218 @Override 3219 protected void onRestoreInstanceState(Parcelable state) { 3220 super.onRestoreInstanceState(state); 3221 Launcher.setScreen(mCurrentPage); 3222 } 3223 3224 @Override 3225 public void scrollLeft() { 3226 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3227 super.scrollLeft(); 3228 } 3229 } 3230 3231 @Override 3232 public void scrollRight() { 3233 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3234 super.scrollRight(); 3235 } 3236 } 3237 3238 @Override 3239 public void onEnterScrollArea(int direction) { 3240 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3241 mInScrollArea = true; 3242 mPendingScrollDirection = direction; 3243 3244 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3245 final CellLayout layout = (CellLayout) getChildAt(page); 3246 cancelFolderCreation(); 3247 3248 if (layout != null) { 3249 layout.setIsDragOverlapping(true); 3250 3251 if (mDragTargetLayout != null) { 3252 mDragTargetLayout.onDragExit(); 3253 mDragTargetLayout = layout; 3254 } 3255 // In portrait, need to redraw the edge glow when entering the scroll area 3256 if (getHeight() > getWidth()) { 3257 invalidate(); 3258 } 3259 } 3260 } 3261 } 3262 3263 private void clearAllHovers() { 3264 final int childCount = getChildCount(); 3265 for (int i = 0; i < childCount; i++) { 3266 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3267 } 3268 3269 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3270 // so we need to redraw the workspace when this may have changed. 3271 if (getHeight() > getWidth()) { 3272 invalidate(); 3273 } 3274 } 3275 3276 @Override 3277 public void onExitScrollArea() { 3278 if (mInScrollArea) { 3279 mInScrollArea = false; 3280 mPendingScrollDirection = DragController.SCROLL_NONE; 3281 clearAllHovers(); 3282 } 3283 } 3284 3285 public Folder getFolderForTag(Object tag) { 3286 final int screenCount = getChildCount(); 3287 for (int screen = 0; screen < screenCount; screen++) { 3288 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3289 int count = currentScreen.getChildCount(); 3290 for (int i = 0; i < count; i++) { 3291 View child = currentScreen.getChildAt(i); 3292 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3293 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3294 Folder f = (Folder) child; 3295 if (f.getInfo() == tag && f.getInfo().opened) { 3296 return f; 3297 } 3298 } 3299 } 3300 } 3301 return null; 3302 } 3303 3304 public View getViewForTag(Object tag) { 3305 int screenCount = getChildCount(); 3306 for (int screen = 0; screen < screenCount; screen++) { 3307 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3308 int count = currentScreen.getChildCount(); 3309 for (int i = 0; i < count; i++) { 3310 View child = currentScreen.getChildAt(i); 3311 if (child.getTag() == tag) { 3312 return child; 3313 } 3314 } 3315 } 3316 return null; 3317 } 3318 3319 void clearDropTargets() { 3320 final int screenCount = getChildCount(); 3321 3322 for (int i = 0; i < screenCount; i++) { 3323 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3324 final ViewGroup layout = layoutParent.getChildrenLayout(); 3325 int childCount = layout.getChildCount(); 3326 for (int j = 0; j < childCount; j++) { 3327 View v = layout.getChildAt(j); 3328 if (v instanceof DropTarget) { 3329 mDragController.removeDropTarget((DropTarget) v); 3330 } 3331 } 3332 } 3333 } 3334 3335 void removeItems(final ArrayList<ApplicationInfo> apps) { 3336 final int screenCount = getChildCount(); 3337 final PackageManager manager = getContext().getPackageManager(); 3338 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3339 3340 final HashSet<String> packageNames = new HashSet<String>(); 3341 final int appCount = apps.size(); 3342 for (int i = 0; i < appCount; i++) { 3343 packageNames.add(apps.get(i).componentName.getPackageName()); 3344 } 3345 3346 for (int i = 0; i < screenCount; i++) { 3347 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3348 final ViewGroup layout = layoutParent.getChildrenLayout(); 3349 3350 // Avoid ANRs by treating each screen separately 3351 post(new Runnable() { 3352 public void run() { 3353 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3354 childrenToRemove.clear(); 3355 3356 int childCount = layout.getChildCount(); 3357 for (int j = 0; j < childCount; j++) { 3358 final View view = layout.getChildAt(j); 3359 Object tag = view.getTag(); 3360 3361 if (tag instanceof ShortcutInfo) { 3362 final ShortcutInfo info = (ShortcutInfo) tag; 3363 final Intent intent = info.intent; 3364 final ComponentName name = intent.getComponent(); 3365 3366 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3367 for (String packageName: packageNames) { 3368 if (packageName.equals(name.getPackageName())) { 3369 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3370 childrenToRemove.add(view); 3371 } 3372 } 3373 } 3374 } else if (tag instanceof FolderInfo) { 3375 final FolderInfo info = (FolderInfo) tag; 3376 final ArrayList<ShortcutInfo> contents = info.contents; 3377 final int contentsCount = contents.size(); 3378 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3379 new ArrayList<ShortcutInfo>(); 3380 3381 for (int k = 0; k < contentsCount; k++) { 3382 final ShortcutInfo appInfo = contents.get(k); 3383 final Intent intent = appInfo.intent; 3384 final ComponentName name = intent.getComponent(); 3385 3386 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3387 for (String packageName: packageNames) { 3388 if (packageName.equals(name.getPackageName())) { 3389 appsToRemoveFromFolder.add(appInfo); 3390 } 3391 } 3392 } 3393 } 3394 for (ShortcutInfo item: appsToRemoveFromFolder) { 3395 info.remove(item); 3396 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3397 } 3398 } else if (tag instanceof LauncherAppWidgetInfo) { 3399 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3400 final AppWidgetProviderInfo provider = 3401 widgets.getAppWidgetInfo(info.appWidgetId); 3402 if (provider != null) { 3403 for (String packageName: packageNames) { 3404 if (packageName.equals(provider.provider.getPackageName())) { 3405 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3406 childrenToRemove.add(view); 3407 } 3408 } 3409 } 3410 } 3411 } 3412 3413 childCount = childrenToRemove.size(); 3414 for (int j = 0; j < childCount; j++) { 3415 View child = childrenToRemove.get(j); 3416 // Note: We can not remove the view directly from CellLayoutChildren as this 3417 // does not re-mark the spaces as unoccupied. 3418 layoutParent.removeViewInLayout(child); 3419 if (child instanceof DropTarget) { 3420 mDragController.removeDropTarget((DropTarget)child); 3421 } 3422 } 3423 3424 if (childCount > 0) { 3425 layout.requestLayout(); 3426 layout.invalidate(); 3427 } 3428 } 3429 }); 3430 } 3431 } 3432 3433 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3434 final int screenCount = getChildCount(); 3435 for (int i = 0; i < screenCount; i++) { 3436 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3437 int childCount = layout.getChildCount(); 3438 for (int j = 0; j < childCount; j++) { 3439 final View view = layout.getChildAt(j); 3440 Object tag = view.getTag(); 3441 if (tag instanceof ShortcutInfo) { 3442 ShortcutInfo info = (ShortcutInfo)tag; 3443 // We need to check for ACTION_MAIN otherwise getComponent() might 3444 // return null for some shortcuts (for instance, for shortcuts to 3445 // web pages.) 3446 final Intent intent = info.intent; 3447 final ComponentName name = intent.getComponent(); 3448 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3449 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3450 final int appCount = apps.size(); 3451 for (int k = 0; k < appCount; k++) { 3452 ApplicationInfo app = apps.get(k); 3453 if (app.componentName.equals(name)) { 3454 info.setIcon(mIconCache.getIcon(info.intent)); 3455 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3456 new FastBitmapDrawable(info.getIcon(mIconCache)), 3457 null, null); 3458 } 3459 } 3460 } 3461 } 3462 } 3463 } 3464 } 3465 3466 void moveToDefaultScreen(boolean animate) { 3467 if (mIsSmall || mIsInUnshrinkAnimation) { 3468 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3469 } else if (animate) { 3470 snapToPage(mDefaultPage); 3471 } else { 3472 setCurrentPage(mDefaultPage); 3473 } 3474 getChildAt(mDefaultPage).requestFocus(); 3475 } 3476 3477 @Override 3478 public void syncPages() { 3479 } 3480 3481 @Override 3482 public void syncPageItems(int page) { 3483 } 3484 3485 @Override 3486 protected String getCurrentPageDescription() { 3487 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3488 return String.format(mContext.getString(R.string.workspace_scroll_format), 3489 page + 1, getChildCount()); 3490 } 3491} 3492